1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
|
/* Copyright (C) 2002-2016 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
#ifndef _SYS_EPOLL_H
#define _SYS_EPOLL_H 1
#include <stdint.h>
#include <sys/types.h>
/* Get __sigset_t. */
#include <bits/sigset.h>
#ifndef __sigset_t_defined
# define __sigset_t_defined
typedef __sigset_t sigset_t;
#endif
/* Get the platform-dependent flags. */
#include <bits/epoll.h>
#ifndef __EPOLL_PACKED
# define __EPOLL_PACKED
#endif
enum EPOLL_EVENTS
{
EPOLLIN = 0x001,
#define EPOLLIN EPOLLIN
EPOLLPRI = 0x002,
#define EPOLLPRI EPOLLPRI
EPOLLOUT = 0x004,
#define EPOLLOUT EPOLLOUT
EPOLLRDNORM = 0x040,
#define EPOLLRDNORM EPOLLRDNORM
EPOLLRDBAND = 0x080,
#define EPOLLRDBAND EPOLLRDBAND
EPOLLWRNORM = 0x100,
#define EPOLLWRNORM EPOLLWRNORM
EPOLLWRBAND = 0x200,
#define EPOLLWRBAND EPOLLWRBAND
EPOLLMSG = 0x400,
#define EPOLLMSG EPOLLMSG
EPOLLERR = 0x008,
#define EPOLLERR EPOLLERR
EPOLLHUP = 0x010,
#define EPOLLHUP EPOLLHUP
EPOLLRDHUP = 0x2000,
#define EPOLLRDHUP EPOLLRDHUP
EPOLLWAKEUP = 1u << 29,
#define EPOLLWAKEUP EPOLLWAKEUP
EPOLLONESHOT = 1u << 30,
#define EPOLLONESHOT EPOLLONESHOT
EPOLLET = 1u << 31
#define EPOLLET EPOLLET
};
/* Valid opcodes ( "op" parameter ) to issue to epoll_ctl(). */
#define EPOLL_CTL_ADD 1 /* Add a file descriptor to the interface. */
#define EPOLL_CTL_DEL 2 /* Remove a file descriptor from the interface. */
#define EPOLL_CTL_MOD 3 /* Change file descriptor epoll_event structure. */
typedef union epoll_data
{
void *ptr;
int fd;
uint32_t u32;
uint64_t u64;
} epoll_data_t;
struct epoll_event
{
uint32_t events; /* Epoll events */
epoll_data_t data; /* User data variable */
} __EPOLL_PACKED;
__BEGIN_DECLS
/* Creates an epoll instance. Returns an fd for the new instance.
The "size" parameter is a hint specifying the number of file
descriptors to be associated with the new instance. The fd
returned by epoll_create() should be closed with close(). */
extern int epoll_create (int __size) __THROW;
/* Same as epoll_create but with an FLAGS parameter. The unused SIZE
parameter has been dropped. */
extern int epoll_create1 (int __flags) __THROW;
/* Manipulate an epoll instance "epfd". Returns 0 in case of success,
-1 in case of error ( the "errno" variable will contain the
specific error code ) The "op" parameter is one of the EPOLL_CTL_*
constants defined above. The "fd" parameter is the target of the
operation. The "event" parameter describes which events the caller
is interested in and any associated user data. */
extern int epoll_ctl (int __epfd, int __op, int __fd,
struct epoll_event *__event) __THROW;
/* Wait for events on an epoll instance "epfd". Returns the number of
triggered events returned in "events" buffer. Or -1 in case of
error with the "errno" variable set to the specific error code. The
"events" parameter is a buffer that will contain triggered
events. The "maxevents" is the maximum number of events to be
returned ( usually size of "events" ). The "timeout" parameter
specifies the maximum wait time in milliseconds (-1 == infinite).
This function is a cancellation point and therefore not marked with
__THROW. */
extern int epoll_wait (int __epfd, struct epoll_event *__events,
int __maxevents, int __timeout);
/* Same as epoll_wait, but the thread's signal mask is temporarily
and atomically replaced with the one provided as parameter.
This function is a cancellation point and therefore not marked with
__THROW. */
extern int epoll_pwait (int __epfd, struct epoll_event *__events,
int __maxevents, int __timeout,
const __sigset_t *__ss);
__END_DECLS
#endif /* sys/epoll.h */
|
GitWeb