6198 Let's EOL cachefs
[illumos-gate.git] / usr / src / uts / common / sys / bitset.h
blob99a5f3e23692fb4407fc61078a8656098474aa5a
1 /*
2 * CDDL HEADER START
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
19 * CDDL HEADER END
22 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
25 #ifndef _BITSET_H
26 #define _BITSET_H
28 #ifdef __cplusplus
29 extern "C" {
30 #endif
32 #if (defined(_KERNEL) || defined(_KMEMUSER))
33 #include <sys/bitmap.h>
34 #include <sys/types.h>
36 typedef struct bitset {
37 ulong_t *bs_set;
38 uint_t bs_words;
39 uint_t bs_fanout;
40 } bitset_t;
43 * Bitset initialiation / teardown
45 void bitset_init(bitset_t *);
46 void bitset_init_fanout(bitset_t *, uint_t);
47 void bitset_fini(bitset_t *);
50 * Resize / query a bitset's holding capacity
52 void bitset_resize(bitset_t *, uint_t);
53 uint_t bitset_capacity(bitset_t *);
56 * Set / clear a bit in the set
58 void bitset_add(bitset_t *, uint_t);
59 void bitset_del(bitset_t *, uint_t);
62 * Atomic operations
64 void bitset_atomic_add(bitset_t *, uint_t);
65 void bitset_atomic_del(bitset_t *, uint_t);
66 int bitset_atomic_test_and_add(bitset_t *, uint_t);
67 int bitset_atomic_test_and_del(bitset_t *, uint_t);
70 * Bitset queries
72 int bitset_in_set(bitset_t *, uint_t);
73 int bitset_is_null(bitset_t *);
74 uint_t bitset_find(bitset_t *);
77 * Bitset computations
79 int bitset_and(bitset_t *, bitset_t *, bitset_t *);
80 int bitset_or(bitset_t *, bitset_t *, bitset_t *);
81 int bitset_xor(bitset_t *, bitset_t *, bitset_t *);
84 * Miscellaneous bitset operations
86 void bitset_zero(bitset_t *);
87 void bitset_copy(bitset_t *, bitset_t *);
88 int bitset_match(bitset_t *, bitset_t *);
90 #endif /* !_KERNEL && !_KMEMUSER */
92 #ifdef __cplusplus
94 #endif
96 #endif /* _BITSET_H */