mirror of https://github.com/ericonr/sndio.git
82 lines
2.4 KiB
C
82 lines
2.4 KiB
C
/* $OpenBSD$ */
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/*
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* Copyright (c) 2008-2012 Alexandre Ratchov <alex@caoua.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#ifndef FILE_H
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#define FILE_H
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#include <sys/types.h>
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struct file;
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struct pollfd;
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struct timo {
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struct timo *next;
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unsigned int val; /* time to wait before the callback */
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unsigned int set; /* true if the timeout is set */
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void (*cb)(void *arg); /* routine to call on expiration */
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void *arg; /* argument to give to 'cb' */
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};
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struct fileops {
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char *name;
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int (*pollfd)(void *, struct pollfd *);
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int (*revents)(void *, struct pollfd *);
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/*
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* we have to handle POLLIN and POLLOUT events
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* in separate handles, since handling POLLIN can
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* close the file, and continuing (to handle POLLOUT)
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* would make use of the free()'ed file structure
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*/
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void (*in)(void *);
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void (*out)(void *);
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void (*hup)(void *);
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};
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struct file {
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struct file *next; /* next in file_list */
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struct fileops *ops; /* event handlers */
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void *arg; /* argument to event handlers */
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#define FILE_INIT 0 /* ready */
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#define FILE_ZOMB 1 /* closed, but not free()d yet */
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unsigned int state; /* one of above */
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unsigned int max_nfds; /* max number of descriptors */
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unsigned int nfds; /* number of descriptors polled */
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char *name; /* for debug purposes */
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};
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extern struct file *file_list;
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extern int file_slowaccept;
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#ifdef DEBUG
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extern long long file_wtime, file_utime;
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#endif
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void timo_set(struct timo *, void (*)(void *), void *);
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void timo_add(struct timo *, unsigned int);
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void timo_del(struct timo *);
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void filelist_init(void);
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void filelist_done(void);
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void filelist_unlisten(void);
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struct file *file_new(struct fileops *, void *, char *, unsigned int);
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void file_del(struct file *);
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void file_log(struct file *);
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int file_poll(void);
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#endif /* !defined(FILE_H) */
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