UbixOS V2  2.0
sem.h
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1 /*-
2  * Copyright (c) 2002-2018 The UbixOS Project.
3  * All rights reserved.
4  *
5  * This was developed by Christopher W. Olsen for the UbixOS Project.
6  *
7  * Redistribution and use in source and binary forms, with or without modification, are permitted
8  * provided that the following conditions are met:
9  *
10  * 1) Redistributions of source code must retain the above copyright notice, this list of
11  * conditions, the following disclaimer and the list of authors.
12  * 2) Redistributions in binary form must reproduce the above copyright notice, this list of
13  * conditions, the following disclaimer and the list of authors in the documentation and/or
14  * other materials provided with the distribution.
15  * 3) Neither the name of the UbixOS Project nor the names of its contributors may be used to
16  * endorse or promote products derived from this software without specific prior written
17  * permission.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
20  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
21  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
22  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
23  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
24  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
25  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
26  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27  */
28 
29 #ifndef _UBIXOS_SEM_H
30 #define _UBIXOS_SEM_H
31 
32 #include <sys/types.h>
33 #include <ubixos/errno.h>
34 #include <ubixos/ubthread.h>
35 
36 struct sys_sem {
37  uint32_t signaled;
38  ubthread_cond_t cond;
39  ubthread_mutex_t mutex;
40 };
41 
42 typedef struct sys_sem sys_sem_t;
43 
44 typedef uint32_t semID_t;
45 struct timespec;
46 
47 int sem_close(semID_t id);
48 int sem_post(semID_t id);
49 int sem_wait(semID_t id);
50 int sem_trywait(semID_t id);
51 int sem_timedwait(semID_t id, const struct timespec *);
52 int sem_init(sys_sem_t **, uint8_t);
53 int sem_open(semID_t *id, const char *name, int oflag, mode_t mode, unsigned int value);
54 int sem_unlink(const char *name);
55 int sem_getvalue(semID_t id, int *val);
56 int sem_destroy(sys_sem_t **);
57 
58 #endif /* END _UBIXOS_SEM_H */
ubthread_mutex
Definition: ubthread.h:52
sem_wait
int sem_wait(semID_t id)
Definition: sem.c:44
sys_sem::mutex
ubthread_mutex_t mutex
Definition: sem.h:39
sem_destroy
int sem_destroy(sys_sem_t **)
Definition: sem.c:87
sem_timedwait
int sem_timedwait(semID_t id, const struct timespec *)
Definition: sem.c:52
sys_sem::signaled
uint32_t signaled
Definition: sem.h:37
types.h
sys_sem
Definition: sem.h:36
sem_init
int sem_init(sys_sem_t **, uint8_t)
Definition: sem.c:56
sem_post
int sem_post(semID_t id)
Definition: sem.c:40
mode_t
__mode_t mode_t
Definition: descrip.h:44
sem_close
int sem_close(semID_t id)
Definition: sem.c:36
sem_trywait
int sem_trywait(semID_t id)
Definition: sem.c:48
ubthread.h
uint32_t
__uint32_t uint32_t
Definition: types.h:46
sys_sem::cond
ubthread_cond_t cond
Definition: sem.h:38
sem_open
int sem_open(semID_t *id, const char *name, int oflag, mode_t mode, unsigned int value)
Definition: sem.c:75
name
const char * name
Definition: pci.c:37
sem_getvalue
int sem_getvalue(semID_t id, int *val)
Definition: sem.c:83
ubthread_cond
Definition: ubthread.h:47
sem_unlink
int sem_unlink(const char *name)
Definition: sem.c:79
uint8_t
__uint8_t uint8_t
Definition: types.h:44
timespec
Definition: _timespec.h:11
errno.h
semID_t
uint32_t semID_t
Definition: sem.h:44