Subversion Repositories HelenOS

Rev

Rev 2071 | Rev 2089 | Go to most recent revision | Only display areas with differences | Regard whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 2071 Rev 2085
1
/*
1
/*
2
 * Copyright (c) 2001-2004 Jakub Jermar
2
 * Copyright (c) 2001-2004 Jakub Jermar
3
 * All rights reserved.
3
 * All rights reserved.
4
 *
4
 *
5
 * Redistribution and use in source and binary forms, with or without
5
 * Redistribution and use in source and binary forms, with or without
6
 * modification, are permitted provided that the following conditions
6
 * modification, are permitted provided that the following conditions
7
 * are met:
7
 * are met:
8
 *
8
 *
9
 * - Redistributions of source code must retain the above copyright
9
 * - Redistributions of source code must retain the above copyright
10
 *   notice, this list of conditions and the following disclaimer.
10
 *   notice, this list of conditions and the following disclaimer.
11
 * - Redistributions in binary form must reproduce the above copyright
11
 * - Redistributions in binary form must reproduce the above copyright
12
 *   notice, this list of conditions and the following disclaimer in the
12
 *   notice, this list of conditions and the following disclaimer in the
13
 *   documentation and/or other materials provided with the distribution.
13
 *   documentation and/or other materials provided with the distribution.
14
 * - The name of the author may not be used to endorse or promote products
14
 * - The name of the author may not be used to endorse or promote products
15
 *   derived from this software without specific prior written permission.
15
 *   derived from this software without specific prior written permission.
16
 *
16
 *
17
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
 */
27
 */
28
 
28
 
29
/** @addtogroup sync
29
/** @addtogroup sync
30
 * @{
30
 * @{
31
 */
31
 */
32
/** @file
32
/** @file
33
 */
33
 */
34
 
34
 
35
#ifndef KERN_MUTEX_H_
35
#ifndef KERN_MUTEX_H_
36
#define KERN_MUTEX_H_
36
#define KERN_MUTEX_H_
37
 
37
 
38
#include <arch/types.h>
38
#include <arch/types.h>
39
#include <typedefs.h>
39
#include <typedefs.h>
40
#include <synch/semaphore.h>
40
#include <synch/semaphore.h>
41
#include <synch/synch.h>
41
#include <synch/synch.h>
42
 
42
 
43
struct mutex {
43
typedef struct {
44
    semaphore_t sem;
44
    semaphore_t sem;
45
};
45
} mutex_t;
46
 
46
 
47
#define mutex_lock(mtx) \
47
#define mutex_lock(mtx) \
48
    _mutex_lock_timeout((mtx),SYNCH_NO_TIMEOUT,SYNCH_FLAGS_NONE)
48
    _mutex_lock_timeout((mtx),SYNCH_NO_TIMEOUT,SYNCH_FLAGS_NONE)
49
#define mutex_trylock(mtx) \
49
#define mutex_trylock(mtx) \
50
    _mutex_lock_timeout((mtx),SYNCH_NO_TIMEOUT,SYNCH_FLAGS_NON_BLOCKING)
50
    _mutex_lock_timeout((mtx),SYNCH_NO_TIMEOUT,SYNCH_FLAGS_NON_BLOCKING)
51
#define mutex_lock_timeout(mtx,usec) \
51
#define mutex_lock_timeout(mtx,usec) \
52
    _mutex_lock_timeout((mtx),(usec),SYNCH_FLAGS_NON_BLOCKING)
52
    _mutex_lock_timeout((mtx),(usec),SYNCH_FLAGS_NON_BLOCKING)
53
#define mutex_lock_active(mtx) \
53
#define mutex_lock_active(mtx) \
54
    while (mutex_trylock((mtx)) != ESYNCH_OK_ATOMIC)
54
    while (mutex_trylock((mtx)) != ESYNCH_OK_ATOMIC)
55
 
55
 
56
extern void mutex_initialize(mutex_t *mtx);
56
extern void mutex_initialize(mutex_t *mtx);
57
extern int _mutex_lock_timeout(mutex_t *mtx, uint32_t usec, int flags);
57
extern int _mutex_lock_timeout(mutex_t *mtx, uint32_t usec, int flags);
58
extern void mutex_unlock(mutex_t *mtx);
58
extern void mutex_unlock(mutex_t *mtx);
59
 
59
 
60
#endif
60
#endif
61
 
61
 
62
/** @}
62
/** @}
63
 */
63
 */
64
 
64