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| 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 | ||