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
143
144
|
/*
* Embedded Linux library
* Copyright (C) 2017 Intel Corporation
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/socket.h>
#include <glib.h>
#include <ell/ell.h>
static GMainLoop *event_loop;
struct ell_event_source {
GSource source;
GPollFD pollfd;
};
static gboolean event_prepare(GSource *source, gint *timeout)
{
int r = l_main_prepare();
*timeout = r;
return FALSE;
}
static gboolean event_check(GSource *source)
{
l_main_iterate(0);
return FALSE;
}
static GSourceFuncs event_funcs = {
.prepare = event_prepare,
.check = event_check,
};
static void do_debug(const char *str, void *user_data)
{
const char *prefix = user_data;
l_info("%s%s", prefix, str);
}
static void oneshot_handler(void *user_data)
{
l_info("One-shot");
}
static bool write_handler(struct l_io *io, void *user_data)
{
int fd = l_io_get_fd(io);
char *str = "Hello";
ssize_t written;
written = write(fd, str, strlen(str));
l_info("%zd bytes written", written);
return false;
}
static bool read_handler(struct l_io *io, void *user_data)
{
int fd = l_io_get_fd(io);
char str[32];
ssize_t result;
result = read(fd, str, sizeof(str));
l_info("%zd bytes read", result);
g_main_loop_quit(event_loop);
return false;
}
static void disconnect_handler(struct l_io *io, void *user_data)
{
l_info("disconnect");
}
int main(int argc, char **argv)
{
struct l_io *io1, *io2;
int fd[2];
struct ell_event_source *source;
l_log_set_stderr();
l_debug_enable("*");
l_debug("hello");
l_main_init();
event_loop = g_main_loop_new(NULL, FALSE);
source = (struct ell_event_source *) g_source_new(&event_funcs,
sizeof(struct ell_event_source));
source->pollfd.fd = l_main_get_epoll_fd();
source->pollfd.events = G_IO_IN | G_IO_HUP | G_IO_ERR;
g_source_add_poll((GSource *)source, &source->pollfd);
g_source_attach((GSource *) source,
g_main_loop_get_context(event_loop));
l_idle_oneshot(oneshot_handler, NULL, NULL);
if (socketpair(PF_UNIX, SOCK_STREAM | SOCK_NONBLOCK, 0, fd) < 0) {
l_error("Failed to create socket pair");
goto done;
}
io1 = l_io_new(fd[0]);
l_io_set_close_on_destroy(io1, true);
l_io_set_debug(io1, do_debug, "[IO-1] ", NULL);
l_io_set_read_handler(io1, read_handler, NULL, NULL);
l_io_set_disconnect_handler(io1, disconnect_handler, NULL, NULL);
io2 = l_io_new(fd[1]);
l_io_set_close_on_destroy(io2, true);
l_io_set_debug(io2, do_debug, "[IO-2] ", NULL);
l_io_set_write_handler(io2, write_handler, NULL, NULL);
l_io_set_disconnect_handler(io2, disconnect_handler, NULL, NULL);
g_main_loop_run(event_loop);
l_io_destroy(io2);
l_io_destroy(io1);
done:
g_source_destroy((GSource *) source);
g_main_loop_unref(event_loop);
l_main_exit();
return 0;
}
|
