author | zautrix <zautrix> | 2005-03-18 20:17:03 (UTC) |
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committer | zautrix <zautrix> | 2005-03-18 20:17:03 (UTC) |
commit | 9e549686b23b6dffdcbd09c9b10dc2cb795fbcdf (patch) (unidiff) | |
tree | 2528e6cc740225ca0f47d5ac8ff70f7d3bb10621 /libetpan/src/data-types/mailsem.c | |
parent | 9319998f20f03dcc217fbb39656755dc65226276 (diff) | |
download | kdepimpi-9e549686b23b6dffdcbd09c9b10dc2cb795fbcdf.zip kdepimpi-9e549686b23b6dffdcbd09c9b10dc2cb795fbcdf.tar.gz kdepimpi-9e549686b23b6dffdcbd09c9b10dc2cb795fbcdf.tar.bz2 |
Initial revision
Diffstat (limited to 'libetpan/src/data-types/mailsem.c') (more/less context) (ignore whitespace changes)
-rw-r--r-- | libetpan/src/data-types/mailsem.c | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/libetpan/src/data-types/mailsem.c b/libetpan/src/data-types/mailsem.c new file mode 100644 index 0000000..383d953 --- a/dev/null +++ b/libetpan/src/data-types/mailsem.c | |||
@@ -0,0 +1,114 @@ | |||
1 | /* | ||
2 | * libEtPan! -- a mail stuff library | ||
3 | * | ||
4 | * Copyright (C) 2001, 2005 - DINH Viet Hoa | ||
5 | * All rights reserved. | ||
6 | * | ||
7 | * Redistribution and use in source and binary forms, with or without | ||
8 | * modification, are permitted provided that the following conditions | ||
9 | * are met: | ||
10 | * 1. Redistributions of source code must retain the above copyright | ||
11 | * notice, this list of conditions and the following disclaimer. | ||
12 | * 2. Redistributions in binary form must reproduce the above copyright | ||
13 | * notice, this list of conditions and the following disclaimer in the | ||
14 | * documentation and/or other materials provided with the distribution. | ||
15 | * 3. Neither the name of the libEtPan! project nor the names of its | ||
16 | * contributors may be used to endorse or promote products derived | ||
17 | * from this software without specific prior written permission. | ||
18 | * | ||
19 | * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND | ||
20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | ||
21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | ||
22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE | ||
23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | ||
24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | ||
25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | ||
26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | ||
27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | ||
28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | ||
29 | * SUCH DAMAGE. | ||
30 | */ | ||
31 | |||
32 | /* | ||
33 | * $Id$ | ||
34 | */ | ||
35 | |||
36 | #include "mailsem.h" | ||
37 | #include <semaphore.h> | ||
38 | #include <stdlib.h> | ||
39 | #include <stdio.h> | ||
40 | #include <sys/stat.h> | ||
41 | #include <sys/types.h> | ||
42 | #include <fcntl.h> | ||
43 | |||
44 | enum { | ||
45 | SEMKIND_SEMOPEN, | ||
46 | SEMKIND_SEMINIT, | ||
47 | }; | ||
48 | |||
49 | #define SEMNAME_LEN 64 | ||
50 | |||
51 | struct mailsem * mailsem_new(void) | ||
52 | { | ||
53 | struct mailsem * sem; | ||
54 | int r; | ||
55 | |||
56 | sem = malloc(sizeof(* sem)); | ||
57 | if (sem == NULL) | ||
58 | goto err; | ||
59 | |||
60 | r = sem_init(sem->sem_sem, 0, 0); | ||
61 | if (r < 0) { | ||
62 | char name[SEMNAME_LEN]; | ||
63 | |||
64 | free(sem->sem_sem); | ||
65 | |||
66 | snprintf(name, sizeof(name), "sem-%p", sem); | ||
67 | |||
68 | #ifndef __CYGWIN__ | ||
69 | sem->sem_sem = sem_open(name, O_CREAT, 0600, 0); | ||
70 | if (sem->sem_sem == NULL) | ||
71 | goto err; | ||
72 | |||
73 | sem->sem_kind = SEMKIND_SEMOPEN; | ||
74 | #else | ||
75 | goto err; | ||
76 | #endif | ||
77 | } | ||
78 | else { | ||
79 | sem->sem_kind = SEMKIND_SEMINIT; | ||
80 | } | ||
81 | |||
82 | return sem; | ||
83 | |||
84 | err: | ||
85 | return NULL; | ||
86 | } | ||
87 | |||
88 | void mailsem_free(struct mailsem * sem) | ||
89 | { | ||
90 | if (sem->sem_kind == SEMKIND_SEMOPEN) { | ||
91 | char name[SEMNAME_LEN]; | ||
92 | |||
93 | #ifndef __CYGWIN__ | ||
94 | sem_close((sem_t *) sem->sem_sem); | ||
95 | snprintf(name, sizeof(name), "sem-%p", sem); | ||
96 | sem_unlink(name); | ||
97 | #endif | ||
98 | } | ||
99 | else { | ||
100 | sem_destroy((sem_t *) sem->sem_sem); | ||
101 | free(sem->sem_sem); | ||
102 | } | ||
103 | free(sem); | ||
104 | } | ||
105 | |||
106 | int mailsem_up(struct mailsem * sem) | ||
107 | { | ||
108 | return sem_wait((sem_t *) sem->sem_sem); | ||
109 | } | ||
110 | |||
111 | int mailsem_down(struct mailsem * sem) | ||
112 | { | ||
113 | return sem_post((sem_t *) sem->sem_sem); | ||
114 | } | ||