projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 175f072e | 1 | /* |
| 175f072e KM |
2 | * Copyright (c) 1991 Regents of the University of California. |
| 3 | * All rights reserved. | |
| 4 | * | |
| 5 | * This code is derived from software contributed to Berkeley by | |
| 6 | * The Mach Operating System project at Carnegie-Mellon University. | |
| 7 | * | |
| 0e24ad83 | 8 | * %sccs.include.redist.c% |
| 175f072e | 9 | * |
| ffc3bc51 | 10 | * @(#)vm_pageout.h 7.6 (Berkeley) %G% |
| 0e24ad83 KM |
11 | * |
| 12 | * | |
| 13 | * Copyright (c) 1987, 1990 Carnegie-Mellon University. | |
| 14 | * All rights reserved. | |
| 15 | * | |
| 16 | * Author: Avadis Tevanian, Jr. | |
| 17 | * | |
| 18 | * Permission to use, copy, modify and distribute this software and | |
| 19 | * its documentation is hereby granted, provided that both the copyright | |
| 20 | * notice and this permission notice appear in all copies of the | |
| 21 | * software, derivative works or modified versions, and any portions | |
| 22 | * thereof, and that both notices appear in supporting documentation. | |
| 23 | * | |
| 24 | * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" | |
| 25 | * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND | |
| 26 | * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE. | |
| 27 | * | |
| 28 | * Carnegie Mellon requests users of this software to return to | |
| 29 | * | |
| 30 | * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU | |
| 31 | * School of Computer Science | |
| 32 | * Carnegie Mellon University | |
| 33 | * Pittsburgh PA 15213-3890 | |
| 34 | * | |
| 35 | * any improvements or extensions that they make and grant Carnegie the | |
| 36 | * rights to redistribute these changes. | |
| 175f072e KM |
37 | */ |
| 38 | ||
| 39 | /* | |
| 40 | * Header file for pageout daemon. | |
| 41 | */ | |
| 42 | ||
| 175f072e KM |
43 | /* |
| 44 | * Exported data structures. | |
| 45 | */ | |
| 46 | ||
| 47 | extern int vm_pages_needed; /* should be some "event" structure */ | |
| 48 | simple_lock_data_t vm_pages_needed_lock; | |
| 49 | ||
| 50 | ||
| 51 | /* | |
| 52 | * Exported routines. | |
| 53 | */ | |
| 54 | ||
| 55 | /* | |
| 56 | * Signal pageout-daemon and wait for it. | |
| 57 | */ | |
| 58 | ||
| 59 | #define VM_WAIT { \ | |
| 60 | simple_lock(&vm_pages_needed_lock); \ | |
| 61 | thread_wakeup((int)&vm_pages_needed); \ | |
| ebb526a2 | 62 | thread_sleep((int)&cnt.v_free_count, \ |
| 175f072e KM |
63 | &vm_pages_needed_lock, FALSE); \ |
| 64 | } | |
| ffc3bc51 KB |
65 | #ifdef KERNEL |
| 66 | void vm_pageout __P((void)); | |
| 67 | void vm_pageout_scan __P((void)); | |
| 68 | #endif |