Rev 1502 | Go to most recent revision | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1 | jermar | 1 | /* |
| 2 | * Copyright (C) 2001-2004 Jakub Jermar |
||
| 3 | * All rights reserved. |
||
| 4 | * |
||
| 5 | * Redistribution and use in source and binary forms, with or without |
||
| 6 | * modification, are permitted provided that the following conditions |
||
| 7 | * are met: |
||
| 8 | * |
||
| 9 | * - Redistributions of source code must retain the above copyright |
||
| 10 | * notice, this list of conditions and the following disclaimer. |
||
| 11 | * - Redistributions in binary form must reproduce the above copyright |
||
| 12 | * notice, this list of conditions and the following disclaimer in the |
||
| 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 |
||
| 15 | * derived from this software without specific prior written permission. |
||
| 16 | * |
||
| 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 |
||
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
||
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
||
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
||
| 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 |
||
| 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 |
||
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
||
| 27 | */ |
||
| 28 | |||
| 1702 | cejka | 29 | /** @addtogroup sync |
| 30 | * @{ |
||
| 31 | */ |
||
| 32 | /** @file |
||
| 33 | */ |
||
| 34 | |||
| 1 | jermar | 35 | #ifndef __SEMAPHORE_H__ |
| 36 | #define __SEMAPHORE_H__ |
||
| 37 | |||
| 38 | #include <arch/types.h> |
||
| 39 | #include <typedefs.h> |
||
| 40 | #include <synch/waitq.h> |
||
| 41 | #include <synch/synch.h> |
||
| 42 | |||
| 43 | struct semaphore |
||
| 44 | { |
||
| 125 | jermar | 45 | waitq_t wq; |
| 1 | jermar | 46 | }; |
| 47 | |||
| 48 | #define semaphore_down(s) \ |
||
| 1502 | jermar | 49 | _semaphore_down_timeout((s),SYNCH_NO_TIMEOUT,SYNCH_FLAGS_NONE) |
| 1 | jermar | 50 | #define semaphore_trydown(s) \ |
| 1502 | jermar | 51 | _semaphore_down_timeout((s),SYNCH_NO_TIMEOUT,SYNCH_FLAGS_NON_BLOCKING) |
| 1 | jermar | 52 | #define semaphore_down_timeout(s,usec) \ |
| 1502 | jermar | 53 | _semaphore_down_timeout((s),(usec),SYNCH_FLAGS_NONE) |
| 1 | jermar | 54 | |
| 55 | extern void semaphore_initialize(semaphore_t *s, int val); |
||
| 1502 | jermar | 56 | extern int _semaphore_down_timeout(semaphore_t *s, __u32 usec, int flags); |
| 1 | jermar | 57 | extern void semaphore_up(semaphore_t *s); |
| 58 | |||
| 59 | #endif |
||
| 1502 | jermar | 60 | |
| 1702 | cejka | 61 | |
| 62 | /** @} |
||
| 63 | */ |
||
| 64 |