blob: e7109814c682c6c207420f727ed88dc01e84baf5 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
|
/*
Copyright (C) 2008 Andreas Baumann <abaumann@yahoo.com>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "threads/mutex.h"
#if defined HAVE_PTHREADS
#include <errno.h> /* for EXXX values */
#include <assert.h> /* for assertions */
wolf_error_t wolf_mutex_init( wolf_mutex_t *mutex ) {
pthread_mutexattr_t attr;
int res;
/* intialize mutex attribute object */
res = pthread_mutexattr_init( &attr );
if( res == ENOMEM ) {
return WOLF_ERR_OUT_OF_MEMORY;
} else if( res == EINVAL ) {
return WOLF_ERR_INVALID_VALUE;
} else if( res != 0 ) {
return WOLF_ERR_INTERNAL;
}
/* set default values */
res = pthread_mutexattr_settype( &attr, WOLF_MUTEX_DEFAULT_ATTR );
if( res != 0 ) {
res = pthread_mutexattr_destroy( &attr );
assert( res == 0 );
return WOLF_ERR_INTERNAL;
}
/* initialize the mutex */
res = pthread_mutex_init( mutex, &attr );
if( res == ENOMEM ) {
return WOLF_ERR_OUT_OF_MEMORY;
} else if( res == EINVAL ) {
return WOLF_ERR_INVALID_VALUE;
} else if( res != 0 ) {
return WOLF_ERR_INTERNAL;
}
/* destroy mutex attributes */
res = pthread_mutexattr_destroy( &attr );
assert( res == 0 );
return WOLF_OK;
}
wolf_error_t wolf_mutex_destroy( wolf_mutex_t *mutex ) {
int res;
res = pthread_mutex_destroy( mutex );
if( res == EINVAL ) {
return WOLF_ERR_INVALID_VALUE;
} else if( res != 0 ) {
return WOLF_ERR_INTERNAL;
}
return WOLF_OK;
}
#endif /* defined HAVE_PTHREADS */
#if defined _WIN32
wolf_error_t wolf_mutex_init( wolf_mutex_t *mutex ) {
InitializeCriticalSection( mutex );
return WOLF_OK;
}
wolf_error_t wolf_mutex_destroy( wolf_mutex_t *mutex ) {
DeleteCriticalSection( mutex );
return WOLF_OK;
}
#endif /* defined _WIN32 */
|