projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 175f072e KM |
1 | /* |
| 2 | * Copyright (c) 1986, Avadis Tevanian, Jr. | |
| 3 | * Copyright (c) 1987 Carnegie-Mellon University | |
| 4 | * Copyright (c) 1991 Regents of the University of California. | |
| 5 | * All rights reserved. | |
| 6 | * | |
| 7 | * This code is derived from software contributed to Berkeley by | |
| 8 | * The Mach Operating System project at Carnegie-Mellon University. | |
| 9 | * | |
| 10 | * The CMU software License Agreement specifies the terms and conditions | |
| 11 | * for use and redistribution. | |
| 12 | * | |
| 13 | * @(#)vm_pageout.h 7.1 (Berkeley) %G% | |
| 14 | */ | |
| 15 | ||
| 16 | /* | |
| 17 | * Header file for pageout daemon. | |
| 18 | */ | |
| 19 | ||
| 20 | #include "lock.h" | |
| 21 | ||
| 22 | /* | |
| 23 | * Exported data structures. | |
| 24 | */ | |
| 25 | ||
| 26 | extern int vm_pages_needed; /* should be some "event" structure */ | |
| 27 | simple_lock_data_t vm_pages_needed_lock; | |
| 28 | ||
| 29 | ||
| 30 | /* | |
| 31 | * Exported routines. | |
| 32 | */ | |
| 33 | ||
| 34 | /* | |
| 35 | * Signal pageout-daemon and wait for it. | |
| 36 | */ | |
| 37 | ||
| 38 | #define VM_WAIT { \ | |
| 39 | simple_lock(&vm_pages_needed_lock); \ | |
| 40 | thread_wakeup((int)&vm_pages_needed); \ | |
| 41 | thread_sleep((int)&vm_page_free_count, \ | |
| 42 | &vm_pages_needed_lock, FALSE); \ | |
| 43 | } |