mirror of
https://git.proxmox.com/git/mirror_zfs.git
synced 2024-12-27 03:19:35 +03:00
3a03c96381
The commit replaces all findings of the link: http://www.opensolaris.org/os/licensing with this one: https://opensource.org/licenses/CDDL-1.0 Reviewed-by: George Melikov <mail@gmelikov.ru> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: WHR <msl0000023508@gmail.com> Signed-off-by: Tino Reichardt <milky-zfs@mcmilk.de> Closes #14625
94 lines
2.5 KiB
C
94 lines
2.5 KiB
C
/*
|
|
* CDDL HEADER START
|
|
*
|
|
* The contents of this file are subject to the terms of the
|
|
* Common Development and Distribution License (the "License").
|
|
* You may not use this file except in compliance with the License.
|
|
*
|
|
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
|
|
* or https://opensource.org/licenses/CDDL-1.0.
|
|
* See the License for the specific language governing permissions
|
|
* and limitations under the License.
|
|
*
|
|
* When distributing Covered Code, include this CDDL HEADER in each
|
|
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
|
|
* If applicable, add the following below this CDDL HEADER, with the
|
|
* fields enclosed by brackets "[]" replaced with your own identifying
|
|
* information: Portions Copyright [yyyy] [name of copyright owner]
|
|
*
|
|
* CDDL HEADER END
|
|
*/
|
|
|
|
/*
|
|
* Copyright 2006 Sun Microsystems, Inc. All rights reserved.
|
|
* Use is subject to license terms.
|
|
*/
|
|
|
|
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
|
|
/* All Rights Reserved */
|
|
|
|
|
|
#ifndef _SYS_BITMAP_H
|
|
#define _SYS_BITMAP_H
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/*
|
|
* Operations on bitmaps of arbitrary size
|
|
* A bitmap is a vector of 1 or more ulong_t's.
|
|
* The user of the package is responsible for range checks and keeping
|
|
* track of sizes.
|
|
*/
|
|
|
|
#ifdef _LP64
|
|
#define BT_ULSHIFT 6 /* log base 2 of BT_NBIPUL, to extract word index */
|
|
#define BT_ULSHIFT32 5 /* log base 2 of BT_NBIPUL, to extract word index */
|
|
#else
|
|
#define BT_ULSHIFT 5 /* log base 2 of BT_NBIPUL, to extract word index */
|
|
#endif
|
|
|
|
#define BT_NBIPUL (1 << BT_ULSHIFT) /* n bits per ulong_t */
|
|
#define BT_ULMASK (BT_NBIPUL - 1) /* to extract bit index */
|
|
|
|
/*
|
|
* bitmap is a ulong_t *, bitindex an index_t
|
|
*
|
|
* The macros BT_WIM and BT_BIW internal; there is no need
|
|
* for users of this package to use them.
|
|
*/
|
|
|
|
/*
|
|
* word in map
|
|
*/
|
|
#define BT_WIM(bitmap, bitindex) \
|
|
((bitmap)[(bitindex) >> BT_ULSHIFT])
|
|
/*
|
|
* bit in word
|
|
*/
|
|
#define BT_BIW(bitindex) \
|
|
(1UL << ((bitindex) & BT_ULMASK))
|
|
|
|
/*
|
|
* These are public macros
|
|
*
|
|
* BT_BITOUL == n bits to n ulong_t's
|
|
*/
|
|
#define BT_BITOUL(nbits) \
|
|
(((nbits) + BT_NBIPUL - 1l) / BT_NBIPUL)
|
|
#define BT_SIZEOFMAP(nbits) \
|
|
(BT_BITOUL(nbits) * sizeof (ulong_t))
|
|
#define BT_TEST(bitmap, bitindex) \
|
|
((BT_WIM((bitmap), (bitindex)) & BT_BIW(bitindex)) ? 1 : 0)
|
|
#define BT_SET(bitmap, bitindex) \
|
|
{ BT_WIM((bitmap), (bitindex)) |= BT_BIW(bitindex); }
|
|
#define BT_CLEAR(bitmap, bitindex) \
|
|
{ BT_WIM((bitmap), (bitindex)) &= ~BT_BIW(bitindex); }
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _SYS_BITMAP_H */
|