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
145
146
147
148
149
150
151
152
|
/*
* Copyright (C) Igor Sysoev
* Copyright (C) NGINX, Inc.
*/
#include <nxt_main.h>
nxt_conn_io_t nxt_unix_conn_io = {
nxt_conn_io_connect,
nxt_conn_io_accept,
nxt_conn_io_read,
nxt_conn_io_recvbuf,
nxt_conn_io_recv,
nxt_conn_io_write,
nxt_event_conn_io_write_chunk,
#if (NXT_HAVE_LINUX_SENDFILE)
nxt_linux_event_conn_io_sendfile,
#elif (NXT_HAVE_FREEBSD_SENDFILE)
nxt_freebsd_event_conn_io_sendfile,
#elif (NXT_HAVE_MACOSX_SENDFILE)
nxt_macosx_event_conn_io_sendfile,
#elif (NXT_HAVE_SOLARIS_SENDFILEV)
nxt_solaris_event_conn_io_sendfilev,
#elif (NXT_HAVE_AIX_SEND_FILE)
nxt_aix_event_conn_io_send_file,
#elif (NXT_HAVE_HPUX_SENDFILE)
nxt_hpux_event_conn_io_sendfile,
#else
nxt_event_conn_io_sendbuf,
#endif
nxt_event_conn_io_writev,
nxt_event_conn_io_send,
nxt_conn_io_shutdown,
};
nxt_conn_t *
nxt_conn_create(nxt_mp_t *mp, nxt_task_t *task)
{
nxt_conn_t *c;
nxt_thread_t *thr;
c = nxt_mp_zget(mp, sizeof(nxt_conn_t));
if (nxt_slow_path(c == NULL)) {
return NULL;
}
c->mem_pool = mp;
c->socket.fd = -1;
c->socket.log = &c->log;
c->log = *task->log;
/* The while loop skips possible uint32_t overflow. */
while (c->log.ident == 0) {
c->log.ident = nxt_task_next_ident();
}
thr = nxt_thread();
thr->engine->connections++;
c->task.thread = thr;
c->task.log = &c->log;
c->task.ident = c->log.ident;
c->socket.task = &c->task;
c->read_timer.task = &c->task;
c->write_timer.task = &c->task;
c->io = thr->engine->event.io;
c->max_chunk = NXT_INT32_T_MAX;
c->sendfile = NXT_CONN_SENDFILE_UNSET;
c->socket.read_work_queue = &thr->engine->fast_work_queue;
c->socket.write_work_queue = &thr->engine->fast_work_queue;
nxt_conn_timer_init(&c->read_timer, c, c->socket.read_work_queue);
nxt_conn_timer_init(&c->write_timer, c, c->socket.write_work_queue);
nxt_log_debug(&c->log, "connections: %uD", thr->engine->connections);
return c;
}
void
nxt_conn_io_shutdown(nxt_task_t *task, void *obj, void *data)
{
int ret;
socklen_t len;
nxt_conn_t *c;
struct linger linger;
c = obj;
nxt_debug(task, "event conn shutdown");
if (c->socket.timedout) {
/*
* Resetting of timed out connection on close
* releases kernel memory associated with socket.
* This also causes sending TCP/IP RST to a peer.
*/
linger.l_onoff = 1;
linger.l_linger = 0;
len = sizeof(struct linger);
ret = setsockopt(c->socket.fd, SOL_SOCKET, SO_LINGER, &linger, len);
if (nxt_slow_path(ret != 0)) {
nxt_log(task, NXT_LOG_CRIT, "setsockopt(%d, SO_LINGER) failed %E",
c->socket.fd, nxt_socket_errno);
}
}
c->write_state->close_handler(task, c, data);
}
void
nxt_conn_timer(nxt_event_engine_t *engine, nxt_conn_t *c,
const nxt_conn_state_t *state, nxt_timer_t *timer)
{
nxt_msec_t value;
if (state->timer_value != NULL) {
value = state->timer_value(c, state->timer_data);
if (value != 0) {
timer->handler = state->timer_handler;
nxt_timer_add(engine, timer, value);
}
}
}
void
nxt_conn_work_queue_set(nxt_conn_t *c, nxt_work_queue_t *wq)
{
c->read_work_queue = wq;
c->write_work_queue = wq;
c->read_timer.work_queue = wq;
c->write_timer.work_queue = wq;
}
|
