HCoop / bpt / emacs.git / blame
| Commit | Line | Data |
|---|---|---|
| e12489f9 GM |
1 | /* Asynchronous timers. |
| 2 | Copyright (C) 2000 Free Software Foundation, Inc. | |
| 3 | ||
| 4 | This file is part of GNU Emacs. | |
| 5 | ||
| 6 | GNU Emacs is free software; you can redistribute it and/or modify | |
| 7 | it under the terms of the GNU General Public License as published by | |
| 8 | the Free Software Foundation; either version 2, or (at your option) | |
| 9 | any later version. | |
| 10 | ||
| 11 | GNU Emacs is distributed in the hope that it will be useful, | |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 | GNU General Public License for more details. | |
| 15 | ||
| 16 | You should have received a copy of the GNU General Public License | |
| 17 | along with GNU Emacs; see the file COPYING. If not, write to | |
| 18 | the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 19 | Boston, MA 02111-1307, USA. */ | |
| 20 | ||
| 21 | /* Forward declaration. */ | |
| 22 | ||
| 23 | struct atimer; | |
| 24 | ||
| 25 | /* Types of timers. */ | |
| 26 | ||
| 27 | enum atimer_type | |
| 28 | { | |
| 29 | /* Timer is ripe at some absolute time. */ | |
| 30 | ATIMER_ABSOLUTE, | |
| 31 | ||
| 32 | /* Timer is ripe at now plus an offset. */ | |
| 33 | ATIMER_RELATIVE, | |
| 34 | ||
| 35 | /* Timer runs continously. */ | |
| 36 | ATIMER_CONTINUOUS | |
| 37 | }; | |
| 38 | ||
| 39 | /* Type of timer callback functions. */ | |
| 40 | ||
| 41 | typedef void (* atimer_callback) P_ ((struct atimer *timer)); | |
| 42 | ||
| 43 | /* Structure describing an asynchronous timer. */ | |
| 44 | ||
| 45 | struct atimer | |
| 46 | { | |
| 47 | /* The type of this timer. */ | |
| 48 | enum atimer_type type; | |
| 49 | ||
| 50 | /* Time when this timer is ripe. */ | |
| 51 | EMACS_TIME expiration; | |
| 52 | ||
| 53 | /* Interval of this timer. */ | |
| 54 | EMACS_TIME interval; | |
| 55 | ||
| 56 | /* Function to call when timer is ripe. Interupt input is | |
| 57 | garanteed to not be blocked when this function is called. */ | |
| 58 | atimer_callback fn; | |
| 59 | ||
| 60 | /* Additional user-specified data to pass to FN. */ | |
| 61 | void *client_data; | |
| 62 | ||
| 63 | /* Next in list of active or free atimers. */ | |
| 64 | struct atimer *next; | |
| 65 | }; | |
| 66 | ||
| 67 | /* Function prototypes. */ | |
| 68 | ||
| 69 | struct atimer *start_atimer P_ ((enum atimer_type, EMACS_TIME, | |
| 70 | atimer_callback, void *)); | |
| 71 | void cancel_atimer P_ ((struct atimer *)); | |
| 72 | void do_pending_atimers P_ ((void)); | |
| 73 | void init_atimer P_ ((void)); | |
| 74 | void turn_on_atimers P_ ((int)); | |
| 75 |