1 /* 2 * Copyright (c) 2013 EMC Corp. 3 * Copyright (c) 2011 Jeffrey Roberson <jeff@freebsd.org> 4 * Copyright (c) 2008 Mayur Shardul <mayur.shardul@gmail.com> 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 AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, 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 * $FreeBSD$ 29 */ 30 31 #ifndef _VM_RADIX_H_ 32 #define _VM_RADIX_H_ 33 34 #include <vm/_vm_radix.h> 35 36 #ifdef _KERNEL 37 38 int vm_radix_insert(struct vm_radix *rtree, vm_page_t page); 39 void vm_radix_wait(void); 40 boolean_t vm_radix_is_singleton(struct vm_radix *rtree); 41 vm_page_t vm_radix_lookup(struct vm_radix *rtree, vm_pindex_t index); 42 vm_page_t vm_radix_lookup_ge(struct vm_radix *rtree, vm_pindex_t index); 43 vm_page_t vm_radix_lookup_le(struct vm_radix *rtree, vm_pindex_t index); 44 void vm_radix_reclaim_allnodes(struct vm_radix *rtree); 45 vm_page_t vm_radix_remove(struct vm_radix *rtree, vm_pindex_t index); 46 vm_page_t vm_radix_replace(struct vm_radix *rtree, vm_page_t newpage); 47 void vm_radix_zinit(void); 48 49 static __inline void 50 vm_radix_init(struct vm_radix *rtree) 51 { 52 53 rtree->rt_root = 0; 54 } 55 56 static __inline boolean_t 57 vm_radix_is_empty(struct vm_radix *rtree) 58 { 59 60 return (rtree->rt_root == 0); 61 } 62 63 #endif /* _KERNEL */ 64 #endif /* !_VM_RADIX_H_ */ 65