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1 | jermar | 1 | /* |
2071 | jermar | 2 | * Copyright (c) 2001-2004 Jakub Jermar |
1 | jermar | 3 | * All rights reserved. |
4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions |
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7 | * are met: |
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8 | * |
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9 | * - Redistributions of source code must retain the above copyright |
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10 | * notice, this list of conditions and the following disclaimer. |
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11 | * - Redistributions in binary form must reproduce the above copyright |
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12 | * notice, this list of conditions and the following disclaimer in the |
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13 | * documentation and/or other materials provided with the distribution. |
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14 | * - The name of the author may not be used to endorse or promote products |
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15 | * derived from this software without specific prior written permission. |
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16 | * |
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17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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27 | */ |
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28 | |||
1888 | jermar | 29 | /** @addtogroup sync |
1702 | cejka | 30 | * @{ |
31 | */ |
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32 | /** @file |
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33 | */ |
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34 | |||
1888 | jermar | 35 | #ifndef KERN_MUTEX_H_ |
36 | #define KERN_MUTEX_H_ |
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1 | jermar | 37 | |
38 | #include <arch/types.h> |
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39 | #include <synch/semaphore.h> |
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40 | #include <synch/synch.h> |
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41 | |||
3186 | jermar | 42 | typedef enum { |
43 | MUTEX_PASSIVE, |
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44 | MUTEX_ACTIVE |
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45 | } mutex_type_t; |
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46 | |||
2085 | decky | 47 | typedef struct { |
3186 | jermar | 48 | mutex_type_t type; |
1 | jermar | 49 | semaphore_t sem; |
2085 | decky | 50 | } mutex_t; |
1 | jermar | 51 | |
3186 | jermar | 52 | #define mutex_lock(mtx) \ |
2183 | jermar | 53 | _mutex_lock_timeout((mtx), SYNCH_NO_TIMEOUT, SYNCH_FLAGS_NONE) |
3186 | jermar | 54 | #define mutex_trylock(mtx) \ |
2183 | jermar | 55 | _mutex_lock_timeout((mtx), SYNCH_NO_TIMEOUT, SYNCH_FLAGS_NON_BLOCKING) |
3186 | jermar | 56 | #define mutex_lock_timeout(mtx, usec) \ |
2183 | jermar | 57 | _mutex_lock_timeout((mtx), (usec), SYNCH_FLAGS_NON_BLOCKING) |
1380 | jermar | 58 | |
3186 | jermar | 59 | extern void mutex_initialize(mutex_t *, mutex_type_t); |
60 | extern int _mutex_lock_timeout(mutex_t *, uint32_t, int); |
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61 | extern void mutex_unlock(mutex_t *); |
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1 | jermar | 62 | |
63 | #endif |
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1702 | cejka | 64 | |
1888 | jermar | 65 | /** @} |
1702 | cejka | 66 | */ |