Annotation of src/sys/sys/atomic.h, Revision 1.6.8.1
1.6.8.1 ! bouyer 1: /* $NetBSD$ */
1.2 ad 2:
3: /*-
4: * Copyright (c) 2007 The NetBSD Foundation, Inc.
5: * All rights reserved.
6: *
7: * This code is derived from software contributed to The NetBSD Foundation
8: * by Jason R. Thorpe.
9: *
10: * Redistribution and use in source and binary forms, with or without
11: * modification, are permitted provided that the following conditions
12: * are met:
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. Redistributions in binary form must reproduce the above copyright
16: * notice, this list of conditions and the following disclaimer in the
17: * documentation and/or other materials provided with the distribution.
18: * 3. All advertising materials mentioning features or use of this software
19: * must display the following acknowledgement:
20: * This product includes software developed by the NetBSD
21: * Foundation, Inc. and its contributors.
22: * 4. Neither the name of The NetBSD Foundation nor the names of its
23: * contributors may be used to endorse or promote products derived
24: * from this software without specific prior written permission.
25: *
26: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
27: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
28: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
29: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
30: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
31: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
32: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
33: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
34: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
35: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
36: * POSSIBILITY OF SUCH DAMAGE.
37: */
38:
39: #ifndef _SYS_ATOMIC_H_
40: #define _SYS_ATOMIC_H_
41:
42: #include <sys/types.h>
1.6.8.1 ! bouyer 43: #if !defined(_KERNEL) && !defined(_STANDALONE)
1.2 ad 44: #include <stdint.h>
45: #endif
46:
47: /*
48: * Atomic ADD
49: */
1.5 ad 50: void atomic_add_32(volatile uint32_t *, int32_t);
51: void atomic_add_int(volatile unsigned int *, int);
52: void atomic_add_long(volatile unsigned long *, long);
1.2 ad 53: void atomic_add_ptr(volatile void *, ssize_t);
54: void atomic_add_64(volatile uint64_t *, int64_t);
55:
1.5 ad 56: uint32_t atomic_add_32_nv(volatile uint32_t *, int32_t);
57: unsigned int atomic_add_int_nv(volatile unsigned int *, int);
58: unsigned long atomic_add_long_nv(volatile unsigned long *, long);
1.2 ad 59: void * atomic_add_ptr_nv(volatile void *, ssize_t);
1.6 ad 60: uint64_t atomic_add_64_nv(volatile uint64_t *, int64_t);
1.2 ad 61:
62: /*
63: * Atomic AND
64: */
65: void atomic_and_32(volatile uint32_t *, uint32_t);
66: void atomic_and_uint(volatile unsigned int *, unsigned int);
67: void atomic_and_ulong(volatile unsigned long *, unsigned long);
68: void atomic_and_64(volatile uint64_t *, uint64_t);
69:
70: uint32_t atomic_and_32_nv(volatile uint32_t *, uint32_t);
71: unsigned int atomic_and_uint_nv(volatile unsigned int *, unsigned int);
72: unsigned long atomic_and_ulong_nv(volatile unsigned long *, unsigned long);
73: uint64_t atomic_and_64_nv(volatile uint64_t *, uint64_t);
74:
75: /*
76: * Atomic OR
77: */
78: void atomic_or_32(volatile uint32_t *, uint32_t);
79: void atomic_or_uint(volatile unsigned int *, unsigned int);
80: void atomic_or_ulong(volatile unsigned long *, unsigned long);
81: void atomic_or_64(volatile uint64_t *, uint64_t);
82:
83: uint32_t atomic_or_32_nv(volatile uint32_t *, uint32_t);
84: unsigned int atomic_or_uint_nv(volatile unsigned int *, unsigned int);
85: unsigned long atomic_or_ulong_nv(volatile unsigned long *, unsigned long);
86: uint64_t atomic_or_64_nv(volatile uint64_t *, uint64_t);
87:
88: /*
89: * Atomic COMPARE-AND-SWAP
90: */
91: uint32_t atomic_cas_32(volatile uint32_t *, uint32_t, uint32_t);
92: unsigned int atomic_cas_uint(volatile unsigned int *, unsigned int,
93: unsigned int);
94: unsigned long atomic_cas_ulong(volatile unsigned long *, unsigned long,
95: unsigned long);
96: void * atomic_cas_ptr(volatile void *, void *, void *);
97: uint64_t atomic_cas_64(volatile uint64_t *, uint64_t, uint64_t);
98:
99: /*
100: * Atomic SWAP
101: */
102: uint32_t atomic_swap_32(volatile uint32_t *, uint32_t);
103: unsigned int atomic_swap_uint(volatile unsigned int *, unsigned int);
104: unsigned long atomic_swap_ulong(volatile unsigned long *, unsigned long);
105: void * atomic_swap_ptr(volatile void *, void *);
106: uint64_t atomic_swap_64(volatile uint64_t *, uint64_t);
107:
108: /*
109: * Atomic DECREMENT
110: */
111: void atomic_dec_32(volatile uint32_t *);
112: void atomic_dec_uint(volatile unsigned int *);
113: void atomic_dec_ulong(volatile unsigned long *);
114: void atomic_dec_ptr(volatile void *);
115: void atomic_dec_64(volatile uint64_t *);
116:
117: uint32_t atomic_dec_32_nv(volatile uint32_t *);
118: unsigned int atomic_dec_uint_nv(volatile unsigned int *);
119: unsigned long atomic_dec_ulong_nv(volatile unsigned long *);
120: void * atomic_dec_ptr_nv(volatile void *);
121: uint64_t atomic_dec_64_nv(volatile uint64_t *);
122:
123: /*
124: * Atomic INCREMENT
125: */
126: void atomic_inc_32(volatile uint32_t *);
127: void atomic_inc_uint(volatile unsigned int *);
128: void atomic_inc_ulong(volatile unsigned long *);
129: void atomic_inc_ptr(volatile void *);
130: void atomic_inc_64(volatile uint64_t *);
131:
132: uint32_t atomic_inc_32_nv(volatile uint32_t *);
133: unsigned int atomic_inc_uint_nv(volatile unsigned int *);
134: unsigned long atomic_inc_ulong_nv(volatile unsigned long *);
135: void * atomic_inc_ptr_nv(volatile void *);
136: uint64_t atomic_inc_64_nv(volatile uint64_t *);
137:
138: /*
139: * Memory barrier operations
140: */
141: void membar_enter(void);
142: void membar_exit(void);
143: void membar_producer(void);
144: void membar_consumer(void);
145: void membar_sync(void);
146:
147: #endif /* ! _SYS_ATOMIC_H_ */
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