root / lab4 / .minix-src / include / uvm / uvm_swap.h @ 13
History | View | Annotate | Download (2.22 KB)
| 1 | 13 | up20180614 | /* $NetBSD: uvm_swap.h,v 1.22 2015/07/30 10:25:49 christos Exp $ */
|
|---|---|---|---|
| 2 | |||
| 3 | /*
|
||
| 4 | * Copyright (c) 1997 Matthew R. Green
|
||
| 5 | * All rights reserved.
|
||
| 6 | *
|
||
| 7 | * Redistribution and use in source and binary forms, with or without
|
||
| 8 | * modification, are permitted provided that the following conditions
|
||
| 9 | * are met:
|
||
| 10 | * 1. Redistributions of source code must retain the above copyright
|
||
| 11 | * notice, this list of conditions and the following disclaimer.
|
||
| 12 | * 2. Redistributions in binary form must reproduce the above copyright
|
||
| 13 | * notice, this list of conditions and the following disclaimer in the
|
||
| 14 | * documentation and/or other materials provided with the distribution.
|
||
| 15 | *
|
||
| 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
||
| 17 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
||
| 18 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
||
| 19 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||
| 20 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
|
||
| 21 | * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
||
| 22 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
||
| 23 | * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
||
| 24 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||
| 25 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||
| 26 | * SUCH DAMAGE.
|
||
| 27 | *
|
||
| 28 | * from: Id: uvm_swap.h,v 1.1.2.6 1997/12/15 05:39:31 mrg Exp
|
||
| 29 | */
|
||
| 30 | |||
| 31 | #ifndef _UVM_UVM_SWAP_H_
|
||
| 32 | #define _UVM_UVM_SWAP_H_
|
||
| 33 | |||
| 34 | #define SWSLOT_BAD (-1) |
||
| 35 | |||
| 36 | #if defined(_KERNEL) || defined(_MODULE)
|
||
| 37 | #if defined(_KERNEL_OPT)
|
||
| 38 | #include "opt_vmswap.h" |
||
| 39 | #endif
|
||
| 40 | |||
| 41 | struct swapent;
|
||
| 42 | struct lwp;
|
||
| 43 | |||
| 44 | #if defined(VMSWAP)
|
||
| 45 | int uvm_swap_get(struct vm_page *, int, int); |
||
| 46 | int uvm_swap_put(int, struct vm_page **, int, int); |
||
| 47 | int uvm_swap_alloc(int *, bool); |
||
| 48 | void uvm_swap_free(int, int); |
||
| 49 | void uvm_swap_markbad(int, int); |
||
| 50 | bool uvm_swapisfull(void); |
||
| 51 | void swapsys_lock(krw_t);
|
||
| 52 | void swapsys_unlock(void); |
||
| 53 | void uvm_swap_stats(int, struct swapent *, int, register_t *); |
||
| 54 | |||
| 55 | #else /* defined(VMSWAP) */ |
||
| 56 | #define uvm_swapisfull() true |
||
| 57 | #define uvm_swap_stats(c, sep, count, retval) { *retval = 0; } |
||
| 58 | #endif /* defined(VMSWAP) */ |
||
| 59 | void uvm_swap_shutdown(struct lwp *); |
||
| 60 | |||
| 61 | #endif /* _KERNEL || _MODULE */ |
||
| 62 | |||
| 63 | #endif /* _UVM_UVM_SWAP_H_ */ |