5113f6f70
 김현기
kernel add
|
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
|
#ifndef __API_FD_ARRAY__
#define __API_FD_ARRAY__
#include <stdio.h>
struct pollfd;
/**
* struct fdarray: Array of file descriptors
*
* @priv: Per array entry priv area, users should access just its contents,
* not set it to anything, as it is kept in synch with @entries, being
* realloc'ed, * for instance, in fdarray__{grow,filter}.
*
* I.e. using 'fda->priv[N].idx = * value' where N < fda->nr is ok,
* but doing 'fda->priv = malloc(M)' is not allowed.
*/
struct fdarray {
int nr;
int nr_alloc;
int nr_autogrow;
struct pollfd *entries;
union {
int idx;
} *priv;
};
void fdarray__init(struct fdarray *fda, int nr_autogrow);
void fdarray__exit(struct fdarray *fda);
struct fdarray *fdarray__new(int nr_alloc, int nr_autogrow);
void fdarray__delete(struct fdarray *fda);
int fdarray__add(struct fdarray *fda, int fd, short revents);
int fdarray__poll(struct fdarray *fda, int timeout);
int fdarray__filter(struct fdarray *fda, short revents,
void (*entry_destructor)(struct fdarray *fda, int fd));
int fdarray__grow(struct fdarray *fda, int extra);
int fdarray__fprintf(struct fdarray *fda, FILE *fp);
static inline int fdarray__available_entries(struct fdarray *fda)
{
return fda->nr_alloc - fda->nr;
}
#endif /* __API_FD_ARRAY__ */
|