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 */