| 1 | #ifndef __API_FD_ARRAY__
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| 2 | #define __API_FD_ARRAY__
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| 3 |
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| 4 | #include <stdio.h>
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| 5 |
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| 6 | struct pollfd;
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| 7 |
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| 8 | |
| 9 | * struct fdarray: Array of file descriptors
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| 10 | *
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| 11 | * @priv: Per array entry priv area, users should access just its contents,
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| 12 | * not set it to anything, as it is kept in synch with @entries, being
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| 13 | * realloc'ed, * for instance, in fdarray__{grow,filter}.
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| 14 | *
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| 15 | * I.e. using 'fda->priv[N].idx = * value' where N < fda->nr is ok,
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| 16 | * but doing 'fda->priv = malloc(M)' is not allowed.
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| 17 |
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| 18 | struct fdarray {
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| 19 | int nr;
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| 20 | int nr_alloc;
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| 21 | int nr_autogrow;
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| 22 | struct pollfd *entries;
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| 23 | union {
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| 24 | int idx;
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| 25 | } *priv;
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| 26 | };
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| 27 |
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| 28 | void fdarray__init(struct fdarray *fda, int nr_autogrow);
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| 29 | void fdarray__exit(struct fdarray *fda);
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| 30 |
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| 31 | struct fdarray *fdarray__new(int nr_alloc, int nr_autogrow);
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| 32 | void fdarray__delete(struct fdarray *fda);
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| 33 |
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| 34 | int fdarray__add(struct fdarray *fda, int fd, short revents);
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| 35 | int fdarray__poll(struct fdarray *fda, int timeout);
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| 36 | int fdarray__filter(struct fdarray *fda, short revents,
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| 37 | void (*entry_destructor)(struct fdarray *fda, int fd));
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| 38 | int fdarray__grow(struct fdarray *fda, int extra);
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| 39 | int fdarray__fprintf(struct fdarray *fda, FILE *fp);
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| 40 |
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| 41 | static inline int fdarray__available_entries(struct fdarray *fda)
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| 42 | {
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| 43 | return fda->nr_alloc - fda->nr;
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| 44 | }
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| 45 |
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| 46 | #endif
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