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
|
/* x-hook.c
*
* Copyright (c) 2002-2012 Apple Inc. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT
* HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
* Except as contained in this notice, the name(s) of the above
* copyright holders shall not be used in advertising or otherwise to
* promote the sale, use or other dealings in this Software without
* prior written authorization.
*/
#ifdef HAVE_DIX_CONFIG_H
#include <dix-config.h>
#endif
#include "x-hook.h"
#include <stdlib.h>
#include <assert.h>
#include "os.h"
#define CELL_NEW(f, d) X_PFX(list_prepend) ((x_list *)(f), (d))
#define CELL_FREE(c) X_PFX(list_free_1) (c)
#define CELL_FUN(c) ((x_hook_function *)((c)->next))
#define CELL_DATA(c) ((c)->data)
X_EXTERN x_list *
X_PFX(hook_add) (x_list * lst, x_hook_function * fun, void *data) {
return X_PFX(list_prepend) (lst, CELL_NEW(fun, data));
}
X_EXTERN x_list *
X_PFX(hook_remove) (x_list * lst, x_hook_function * fun, void *data) {
x_list *node, *cell;
x_list *to_delete = NULL;
for (node = lst; node != NULL; node = node->next) {
cell = node->data;
if (CELL_FUN(cell) == fun && CELL_DATA(cell) == data)
to_delete = X_PFX(list_prepend) (to_delete, cell);
}
for (node = to_delete; node != NULL; node = node->next) {
cell = node->data;
lst = X_PFX(list_remove) (lst, cell);
CELL_FREE(cell);
}
X_PFX(list_free) (to_delete);
return lst;
}
X_EXTERN void
X_PFX(hook_run) (x_list * lst, void *arg) {
x_list *node, *cell;
x_hook_function **fun;
void **data;
int length, i;
if (!lst)
return;
length = X_PFX(list_length) (lst);
fun = malloc(sizeof(x_hook_function *) * length);
data = malloc(sizeof(void *) * length);
if (!fun || !data) {
FatalError("Failed to allocate memory in %s\n", __func__);
}
for (i = 0, node = lst; node != NULL; node = node->next, i++) {
cell = node->data;
fun[i] = CELL_FUN(cell);
data[i] = CELL_DATA(cell);
}
for (i = 0; i < length; i++) {
(*fun[i])(arg, data[i]);
}
free(fun);
free(data);
}
X_EXTERN void
X_PFX(hook_free) (x_list * lst) {
x_list *node;
for (node = lst; node != NULL; node = node->next) {
CELL_FREE(node->data);
}
X_PFX(list_free) (lst);
}
|
