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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_SYNCH_H_ |
35 | #ifndef KERN_SYNCH_H_ |
36 | #define KERN_SYNCH_H_ |
36 | #define KERN_SYNCH_H_ |
37 | 37 | ||
38 | /** Request with no timeout. */ |
38 | /** Request with no timeout. */ |
39 | #define SYNCH_NO_TIMEOUT 0 |
39 | #define SYNCH_NO_TIMEOUT 0 |
40 | 40 | ||
41 | /** No flags specified. */ |
41 | /** No flags specified. */ |
42 | #define SYNCH_FLAGS_NONE 0 |
42 | #define SYNCH_FLAGS_NONE 0 |
43 | /** Non-blocking operation request. */ |
43 | /** Non-blocking operation request. */ |
44 | #define SYNCH_FLAGS_NON_BLOCKING (1 << 0) |
44 | #define SYNCH_FLAGS_NON_BLOCKING (1 << 0) |
45 | /** Interruptible operation. */ |
45 | /** Interruptible operation. */ |
46 | #define SYNCH_FLAGS_INTERRUPTIBLE (1 << 1) |
46 | #define SYNCH_FLAGS_INTERRUPTIBLE (1 << 1) |
47 | 47 | ||
48 | /** Could not satisfy the request without going to sleep. */ |
48 | /** Could not satisfy the request without going to sleep. */ |
49 | #define ESYNCH_WOULD_BLOCK 1 |
49 | #define ESYNCH_WOULD_BLOCK 1 |
50 | /** Timeout occurred. */ |
50 | /** Timeout occurred. */ |
51 | #define ESYNCH_TIMEOUT 2 |
51 | #define ESYNCH_TIMEOUT 2 |
52 | /** Sleep was interrupted. */ |
52 | /** Sleep was interrupted. */ |
53 | #define ESYNCH_INTERRUPTED 4 |
53 | #define ESYNCH_INTERRUPTED 4 |
54 | /** Operation succeeded without sleeping. */ |
54 | /** Operation succeeded without sleeping. */ |
55 | #define ESYNCH_OK_ATOMIC 8 |
55 | #define ESYNCH_OK_ATOMIC 8 |
56 | /** Operation succeeded and did sleep. */ |
56 | /** Operation succeeded and did sleep. */ |
57 | #define ESYNCH_OK_BLOCKED 16 |
57 | #define ESYNCH_OK_BLOCKED 16 |
58 | 58 | ||
59 | #define SYNCH_FAILED(rc) \ |
59 | #define SYNCH_FAILED(rc) \ |
60 | ((rc) & (ESYNCH_WOULD_BLOCK | ESYNCH_TIMEOUT | ESYNCH_INTERRUPTED)) |
60 | ((rc) & (ESYNCH_WOULD_BLOCK | ESYNCH_TIMEOUT | ESYNCH_INTERRUPTED)) |
61 | #define SYNCH_OK(rc) \ |
61 | #define SYNCH_OK(rc) \ |
62 | ((rc) & (ESYNCH_OK_ATOMIC | ESYNCH_OK_BLOCKED)) |
62 | ((rc) & (ESYNCH_OK_ATOMIC | ESYNCH_OK_BLOCKED)) |
63 | 63 | ||
64 | #endif |
64 | #endif |
65 | 65 | ||
66 | /** @} |
66 | /** @} |
67 | */ |
67 | */ |
68 | 68 |