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Willy Tarreaubaaee002006-06-26 02:48:02 +02001/*
2 include/proto/fd.h
3 File descriptors states.
4
5 Copyright (C) 2000-2006 Willy Tarreau - w@1wt.eu
6
7 This library is free software; you can redistribute it and/or
8 modify it under the terms of the GNU Lesser General Public
9 License as published by the Free Software Foundation, version 2.1
10 exclusively.
11
12 This library is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 Lesser General Public License for more details.
16
17 You should have received a copy of the GNU Lesser General Public
18 License along with this library; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20*/
21
22#ifndef _PROTO_FD_H
23#define _PROTO_FD_H
24
25#include <sys/time.h>
26#include <sys/types.h>
27#include <unistd.h>
28
Willy Tarreaue3ba5f02006-06-29 18:54:54 +020029#include <common/config.h>
Willy Tarreaubaaee002006-06-26 02:48:02 +020030#include <types/fd.h>
31
32/* Deletes an FD from the fdsets, and recomputes the maxfd limit.
33 * The file descriptor is also closed.
34 */
35void fd_delete(int fd);
36
37
Willy Tarreau2a429502006-10-15 14:52:29 +020038/*
39 * Benchmarks performed on a Pentium-M notebook show that using functions
40 * instead of the usual macros improve the FD_* performance by about 80%,
41 * and that marking them regparm(2) adds another 20%.
42 */
43#if defined(CONFIG_HAP_INLINE_FD_SET)
44
45# define MY_FD_SET FD_SET
46# define MY_FD_CLR FD_CLR
47# define MY_FD_ISSET FD_ISSET
48
49#else
50
51# define MY_FD_SET my_fd_set
52# define MY_FD_CLR my_fd_clr
53# define MY_FD_ISSET my_fd_isset
54
55void __attribute__((regparm(2))) my_fd_set(const int fd, fd_set *ev);
56void __attribute__((regparm(2))) my_fd_clr(const int fd, fd_set *ev);
57int __attribute__((regparm(2))) my_fd_isset(const int fd, const fd_set *ev);
58
59#endif
60
61
Willy Tarreaubaaee002006-06-26 02:48:02 +020062/* recomputes the maxfd limit from the fd */
63static inline void fd_insert(int fd)
64{
65 if (fd + 1 > maxfd)
66 maxfd = fd + 1;
67}
68
69
70#endif /* _PROTO_FD_H */
71
72/*
73 * Local variables:
74 * c-indent-level: 8
75 * c-basic-offset: 8
76 * End:
77 */