/* SPDX-License-Identifier: GPL-2.0 */#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;	struct priv {		union {			int    idx;			void   *ptr;		};		unsigned int flags;	} *priv;}; enum fdarray_flags {	fdarray_flag__default	    = 0x00000000,	fdarray_flag__nonfilterable = 0x00000001}; 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, enum fdarray_flags flags);int fdarray__poll(struct fdarray *fda, int timeout);int fdarray__filter(struct fdarray *fda, short revents,		    void (*entry_destructor)(struct fdarray *fda, int fd, void *arg),		    void *arg);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__ */