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
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
|
/**
* @file me_dlist.c
*
* @brief Implements the device list class.
* @note Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de)
* @author Guenter Gebhardt
*/
/*
* Copyright (C) 2007 Meilhaus Electronic GmbH (support@meilhaus.de)
*
* This file 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 2 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, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include "meerror.h"
#include "medefines.h"
#include "medlist.h"
#include "medebug.h"
int me_dlist_query_number_devices(struct me_dlist *dlist, int *number)
{
PDEBUG_LOCKS("called.\n");
*number = dlist->n;
return ME_ERRNO_SUCCESS;
}
unsigned int me_dlist_get_number_devices(struct me_dlist *dlist)
{
PDEBUG_LOCKS("called.\n");
return dlist->n;
}
me_device_t *me_dlist_get_device(struct me_dlist * dlist, unsigned int index)
{
struct list_head *pos;
me_device_t *device = NULL;
unsigned int i = 0;
PDEBUG_LOCKS("called.\n");
if (index >= dlist->n) {
PERROR("Index out of range.\n");
return NULL;
}
list_for_each(pos, &dlist->head) {
if (i == index) {
device = list_entry(pos, me_device_t, list);
break;
}
++i;
}
return device;
}
void me_dlist_add_device_tail(struct me_dlist *dlist, me_device_t * device)
{
PDEBUG_LOCKS("called.\n");
list_add_tail(&device->list, &dlist->head);
++dlist->n;
}
me_device_t *me_dlist_del_device_tail(struct me_dlist *dlist)
{
struct list_head *last;
me_device_t *device;
PDEBUG_LOCKS("called.\n");
if (list_empty(&dlist->head))
return NULL;
last = dlist->head.prev;
device = list_entry(last, me_device_t, list);
list_del(last);
--dlist->n;
return device;
}
int me_dlist_init(me_dlist_t * dlist)
{
PDEBUG_LOCKS("called.\n");
INIT_LIST_HEAD(&dlist->head);
dlist->n = 0;
return 0;
}
void me_dlist_deinit(me_dlist_t * dlist)
{
struct list_head *s;
me_device_t *device;
PDEBUG_LOCKS("called.\n");
while (!list_empty(&dlist->head)) {
s = dlist->head.next;
list_del(s);
device = list_entry(s, me_device_t, list);
device->me_device_destructor(device);
}
dlist->n = 0;
}
|
