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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960/* 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, fdarray_flag__non_perf_event = 0x00000002,};
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__dup_entry_from(struct fdarray *fda, int pos, struct fdarray *from);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__ */