|
0
|
1
|
|
|
2 /*
|
|
|
3 * Copyright (C) Igor Sysoev
|
|
660
|
4 * Copyright (C) Nginx, Inc.
|
|
0
|
5 */
|
|
|
6
|
|
|
7
|
|
|
8 #include <ngx_config.h>
|
|
|
9 #include <ngx_core.h>
|
|
|
10 #include <ngx_event.h>
|
|
|
11
|
|
|
12
|
|
518
|
13 extern int ngx_kqueue;
|
|
|
14
|
|
0
|
15
|
|
126
|
16 ssize_t
|
|
|
17 ngx_aio_read(ngx_connection_t *c, u_char *buf, size_t size)
|
|
0
|
18 {
|
|
|
19 int n;
|
|
|
20 ngx_event_t *rev;
|
|
|
21
|
|
|
22 rev = c->read;
|
|
|
23
|
|
|
24 if (!rev->ready) {
|
|
|
25 ngx_log_error(NGX_LOG_ALERT, c->log, 0, "second aio post");
|
|
|
26 return NGX_AGAIN;
|
|
|
27 }
|
|
|
28
|
|
|
29 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
|
|
|
30 "rev->complete: %d", rev->complete);
|
|
|
31 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
|
|
|
32 "aio size: %d", size);
|
|
|
33
|
|
|
34 if (!rev->complete) {
|
|
|
35 ngx_memzero(&rev->aiocb, sizeof(struct aiocb));
|
|
|
36
|
|
|
37 rev->aiocb.aio_fildes = c->fd;
|
|
|
38 rev->aiocb.aio_buf = buf;
|
|
|
39 rev->aiocb.aio_nbytes = size;
|
|
|
40
|
|
18
|
41 #if (NGX_HAVE_KQUEUE)
|
|
0
|
42 rev->aiocb.aio_sigevent.sigev_notify_kqueue = ngx_kqueue;
|
|
|
43 rev->aiocb.aio_sigevent.sigev_notify = SIGEV_KEVENT;
|
|
|
44 rev->aiocb.aio_sigevent.sigev_value.sigval_ptr = rev;
|
|
|
45 #endif
|
|
|
46
|
|
|
47 if (aio_read(&rev->aiocb) == -1) {
|
|
|
48 ngx_log_error(NGX_LOG_CRIT, rev->log, ngx_errno,
|
|
|
49 "aio_read() failed");
|
|
|
50 rev->error = 1;
|
|
|
51 return NGX_ERROR;
|
|
|
52 }
|
|
|
53
|
|
|
54 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
|
|
|
55 "aio_read: #%d OK", c->fd);
|
|
|
56
|
|
|
57 rev->active = 1;
|
|
|
58 rev->ready = 0;
|
|
|
59 }
|
|
|
60
|
|
|
61 rev->complete = 0;
|
|
|
62
|
|
|
63 n = aio_error(&rev->aiocb);
|
|
|
64 if (n == -1) {
|
|
|
65 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno, "aio_error() failed");
|
|
|
66 rev->error = 1;
|
|
|
67 return NGX_ERROR;
|
|
|
68 }
|
|
|
69
|
|
|
70 if (n != 0) {
|
|
|
71 if (n == NGX_EINPROGRESS) {
|
|
|
72 if (rev->ready) {
|
|
|
73 ngx_log_error(NGX_LOG_ALERT, c->log, n,
|
|
|
74 "aio_read() still in progress");
|
|
|
75 rev->ready = 0;
|
|
|
76 }
|
|
|
77 return NGX_AGAIN;
|
|
|
78 }
|
|
|
79
|
|
|
80 ngx_log_error(NGX_LOG_CRIT, c->log, n, "aio_read() failed");
|
|
|
81 rev->error = 1;
|
|
|
82 rev->ready = 0;
|
|
|
83 return NGX_ERROR;
|
|
|
84 }
|
|
|
85
|
|
|
86 n = aio_return(&rev->aiocb);
|
|
|
87 if (n == -1) {
|
|
|
88 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
|
|
|
89 "aio_return() failed");
|
|
|
90
|
|
|
91 rev->error = 1;
|
|
|
92 rev->ready = 0;
|
|
|
93 return NGX_ERROR;
|
|
|
94 }
|
|
|
95
|
|
|
96 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, rev->log, 0,
|
|
|
97 "aio_read: #%d %d", c->fd, n);
|
|
|
98
|
|
|
99 if (n == 0) {
|
|
|
100 rev->eof = 1;
|
|
|
101 rev->ready = 0;
|
|
|
102 } else {
|
|
|
103 rev->ready = 1;
|
|
|
104 }
|
|
|
105
|
|
|
106 rev->active = 0;
|
|
|
107
|
|
|
108 return n;
|
|
|
109 }
|
