These ones were unambiguous cases where the Foundation was the only listed copyright holder (in the associated license block). Sponsored by: The FreeBSD Foundation
88 lines
2.9 KiB
C
88 lines
2.9 KiB
C
/*-
|
|
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
|
|
*
|
|
* Copyright (c) 2019 The FreeBSD Foundation
|
|
*
|
|
* This software was developed by Konstantin Belousov <kib@FreeBSD.org>
|
|
* under sponsorship from the FreeBSD Foundation.
|
|
*
|
|
* 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 _SYS_RANGESET_H
|
|
#define _SYS_RANGESET_H
|
|
|
|
#ifdef _KERNEL
|
|
|
|
#include <sys/_rangeset.h>
|
|
|
|
typedef bool (*rs_pred_t)(void *ctx, void *r);
|
|
|
|
/*
|
|
* This structure must be embedded at the start of the rangeset element.
|
|
*/
|
|
struct rs_el {
|
|
uint64_t re_start; /* pctrie key */
|
|
uint64_t re_end;
|
|
};
|
|
|
|
void rangeset_init(struct rangeset *rs, rs_dup_data_t dup_data,
|
|
rs_free_data_t free_data, void *rs_data_ctx, u_int alloc_flags);
|
|
void rangeset_fini(struct rangeset *rs);
|
|
|
|
bool rangeset_check_empty(struct rangeset *rs, uint64_t start,
|
|
uint64_t end);
|
|
|
|
/*
|
|
* r point to the app data with struct rs_el at the beginning.
|
|
*/
|
|
int rangeset_insert(struct rangeset *rs, uint64_t start, uint64_t end,
|
|
void *r);
|
|
|
|
/*
|
|
* Guarantees that on error the rangeset is not modified. Remove
|
|
* might need to split element if its start/end completely cover the
|
|
* removed range, in which case ENOMEM might be returned.
|
|
*/
|
|
void rangeset_remove_all(struct rangeset *rs);
|
|
int rangeset_remove(struct rangeset *rs, uint64_t start, uint64_t end);
|
|
int rangeset_remove_pred(struct rangeset *rs, uint64_t start,
|
|
uint64_t end, rs_pred_t pred);
|
|
|
|
/*
|
|
* Really returns the pointer to the data with struct rs_el embedded
|
|
* at the beginning.
|
|
*/
|
|
void *rangeset_lookup(struct rangeset *rs, uint64_t place);
|
|
|
|
/*
|
|
* Copies src_rs entries into dst_rs. dst_rs must be empty.
|
|
* Leaves dst_rs empty on failure.
|
|
*/
|
|
int rangeset_copy(struct rangeset *dst_rs, struct rangeset *src_rs);
|
|
|
|
#endif
|
|
|
|
#endif
|