docs/how-to-build.md: use proper markup for directory names
[unleashed/tickless.git] / include / sys / sem.h
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1 /*
2 * CDDL HEADER START
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License"). You may not use this file except in compliance
7 * with the License.
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
20 * CDDL HEADER END
23 * Copyright 2014 Garrett D'Amore <garrett@damore.org>
25 * Copyright 1997-2003 Sun Microsystems, Inc. All rights reserved.
26 * Use is subject to license terms.
29 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
30 /* All Rights Reserved */
33 #ifndef _SYS_SEM_H
34 #define _SYS_SEM_H
36 #include <sys/ipc.h>
38 #ifdef __cplusplus
39 extern "C" {
40 #endif
43 * IPC Semaphore Facility.
47 * Implementation Constants.
51 * Permission Definitions.
54 #define SEM_A 0200 /* alter permission */
55 #define SEM_R 0400 /* read permission */
58 * Semaphore Operation Flags.
61 #define SEM_UNDO 010000 /* set up adjust on exit entry */
64 * Semctl Command Definitions.
67 #define GETNCNT 3 /* get semncnt */
68 #define GETPID 4 /* get sempid */
69 #define GETVAL 5 /* get semval */
70 #define GETALL 6 /* get all semval's */
71 #define GETZCNT 7 /* get semzcnt */
72 #define SETVAL 8 /* set semval */
73 #define SETALL 9 /* set all semval's */
76 * Structure Definitions.
79 struct semid_ds {
80 struct ipc_perm sem_perm; /* operation permission struct */
81 struct sem *sem_base; /* ptr to first semaphore in set */
82 ushort_t sem_nsems; /* # of semaphores in set */
83 #if defined(_LP64)
84 time_t sem_otime; /* last semop time */
85 time_t sem_ctime; /* last change time */
86 #else /* _LP64 */
87 time_t sem_otime; /* last semop time */
88 int32_t sem_pad1; /* reserved for time_t expansion */
89 time_t sem_ctime; /* last change time */
90 int32_t sem_pad2; /* time_t expansion */
91 #endif /* _LP64 */
92 int sem_binary; /* flag indicating semaphore type */
93 long sem_pad3[3]; /* reserve area */
97 * User semaphore template for semop system calls.
99 struct sembuf {
100 ushort_t sem_num; /* semaphore # */
101 short sem_op; /* semaphore operation */
102 short sem_flg; /* operation flags */
105 #if !defined(_KERNEL)
106 int semctl(int, int, int, ...);
107 int semget(key_t, int, int);
108 int semids(int *, uint_t, uint_t *);
109 int semop(int, struct sembuf *, size_t);
110 #if defined(__EXTENSIONS__) || !defined(_XOPEN_SOURCE)
111 int semtimedop(int, struct sembuf *, size_t, const struct timespec *);
112 #endif
113 #endif /* ! _KERNEL */
115 #ifdef __cplusplus
117 #endif
119 #endif /* _SYS_SEM_H */