1 /* -*- mode: C; c-file-style: "gnu" -*- */ 2 /* expirelist.h List of stuff that expires 3 * 4 * Copyright (C) 2003 Red Hat, Inc. 5 * 6 * Licensed under the Academic Free License version 2.1 7 * 8 * This program is free software; you can redistribute it and/or modify 9 * it under the terms of the GNU General Public License as published by 10 * the Free Software Foundation; either version 2 of the License, or 11 * (at your option) any later version. 12 * 13 * This program is distributed in the hope that it will be useful, 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * GNU General Public License for more details. 17 * 18 * You should have received a copy of the GNU General Public License 19 * along with this program; if not, write to the Free Software 20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 21 * 22 */ 23 24 #ifndef BUS_EXPIRE_LIST_H 25 #define BUS_EXPIRE_LIST_H 26 27 #include <dbus/dbus.h> 28 #include <dbus/dbus-list.h> 29 #include <dbus/dbus-mainloop.h> 30 31 typedef struct BusExpireList BusExpireList; 32 typedef struct BusExpireItem BusExpireItem; 33 34 typedef dbus_bool_t (* BusExpireFunc) (BusExpireList *list, 35 DBusList *link, 36 void *data); 37 38 struct BusExpireList 39 { 40 DBusList *items; /**< List of BusExpireItem */ 41 DBusTimeout *timeout; 42 DBusLoop *loop; 43 BusExpireFunc expire_func; 44 void *data; 45 int expire_after; /**< Expire after milliseconds (thousandths) */ 46 }; 47 48 /* embed this in a child expire item struct */ 49 struct BusExpireItem 50 { 51 long added_tv_sec; /**< Time we were added (seconds component) */ 52 long added_tv_usec; /**< Time we were added (microsec component) */ 53 }; 54 55 BusExpireList* bus_expire_list_new (DBusLoop *loop, 56 int expire_after, 57 BusExpireFunc expire_func, 58 void *data); 59 void bus_expire_list_free (BusExpireList *list); 60 61 #define ELAPSED_MILLISECONDS_SINCE(orig_tv_sec, orig_tv_usec, \ 62 now_tv_sec, now_tv_usec) \ 63 (((double) (now_tv_sec) - (double) (orig_tv_sec)) * 1000.0 + \ 64 ((double) (now_tv_usec) - (double) (orig_tv_usec)) / 1000.0) 65 66 void bus_expire_timeout_set_interval (DBusTimeout *timeout, 67 int next_interval); 68 69 #endif /* BUS_EXPIRE_LIST_H */ 70