22d3316afc
The tree is kept correct for readers with store barriers and careful ordering. The existing object lock serializes writers. Consumers will be introduced in later commits. Reviewed by: markj, kib Differential Revision: https://reviews.freebsd.org/D23446
68 lines
2.5 KiB
C
68 lines
2.5 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
|
*
|
|
* Copyright (c) 2013 EMC Corp.
|
|
* Copyright (c) 2011 Jeffrey Roberson <jeff@freebsd.org>
|
|
* Copyright (c) 2008 Mayur Shardul <mayur.shardul@gmail.com>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef _VM_RADIX_H_
|
|
#define _VM_RADIX_H_
|
|
|
|
#include <vm/_vm_radix.h>
|
|
|
|
#ifdef _KERNEL
|
|
|
|
int vm_radix_insert(struct vm_radix *rtree, vm_page_t page);
|
|
void vm_radix_wait(void);
|
|
boolean_t vm_radix_is_singleton(struct vm_radix *rtree);
|
|
vm_page_t vm_radix_lookup(struct vm_radix *rtree, vm_pindex_t index);
|
|
vm_page_t vm_radix_lookup_ge(struct vm_radix *rtree, vm_pindex_t index);
|
|
vm_page_t vm_radix_lookup_le(struct vm_radix *rtree, vm_pindex_t index);
|
|
vm_page_t vm_radix_lookup_unlocked(struct vm_radix *rtree, vm_pindex_t index);
|
|
void vm_radix_reclaim_allnodes(struct vm_radix *rtree);
|
|
vm_page_t vm_radix_remove(struct vm_radix *rtree, vm_pindex_t index);
|
|
vm_page_t vm_radix_replace(struct vm_radix *rtree, vm_page_t newpage);
|
|
void vm_radix_zinit(void);
|
|
|
|
static __inline void
|
|
vm_radix_init(struct vm_radix *rtree)
|
|
{
|
|
|
|
rtree->rt_root = 0;
|
|
}
|
|
|
|
static __inline boolean_t
|
|
vm_radix_is_empty(struct vm_radix *rtree)
|
|
{
|
|
|
|
return (rtree->rt_root == 0);
|
|
}
|
|
|
|
#endif /* _KERNEL */
|
|
#endif /* !_VM_RADIX_H_ */
|