ocfs2: fix a tiny case that inode can not removed
[linux/fpc-iii.git] / tools / lib / api / fd / array.h
blob45db01818f45c92bca6588eae4f2058b4a67bc73
1 #ifndef __API_FD_ARRAY__
2 #define __API_FD_ARRAY__
4 #include <stdio.h>
6 struct pollfd;
8 /**
9 * struct fdarray: Array of file descriptors
11 * @priv: Per array entry priv area, users should access just its contents,
12 * not set it to anything, as it is kept in synch with @entries, being
13 * realloc'ed, * for instance, in fdarray__{grow,filter}.
15 * I.e. using 'fda->priv[N].idx = * value' where N < fda->nr is ok,
16 * but doing 'fda->priv = malloc(M)' is not allowed.
18 struct fdarray {
19 int nr;
20 int nr_alloc;
21 int nr_autogrow;
22 struct pollfd *entries;
23 union {
24 int idx;
25 } *priv;
28 void fdarray__init(struct fdarray *fda, int nr_autogrow);
29 void fdarray__exit(struct fdarray *fda);
31 struct fdarray *fdarray__new(int nr_alloc, int nr_autogrow);
32 void fdarray__delete(struct fdarray *fda);
34 int fdarray__add(struct fdarray *fda, int fd, short revents);
35 int fdarray__poll(struct fdarray *fda, int timeout);
36 int fdarray__filter(struct fdarray *fda, short revents,
37 void (*entry_destructor)(struct fdarray *fda, int fd));
38 int fdarray__grow(struct fdarray *fda, int extra);
39 int fdarray__fprintf(struct fdarray *fda, FILE *fp);
41 static inline int fdarray__available_entries(struct fdarray *fda)
43 return fda->nr_alloc - fda->nr;
46 #endif /* __API_FD_ARRAY__ */