Mercurial > hg > nginx

annotate src/event/ngx_event_aio_read.c @ 59:e8cdc2989cee

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
nginx-0.0.1-2003-02-06-20:21:13 import
author Igor Sysoev <igor@sysoev.ru>
date Thu, 06 Feb 2003 17:21:13 +0000
parents
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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59
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
1
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
2 #include <ngx_config.h>
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
3 #include <ngx_core.h>
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
4 #include <ngx_errno.h>
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
5 #include <ngx_log.h>
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
6 #include <ngx_recv.h>
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
7 #include <ngx_connection.h>
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
8 #include <ngx_event.h>
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
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diff changeset
9
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
10 #if (HAVE_KQUEUE)
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
11 #include <ngx_kqueue_module.h>
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
12 #endif
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
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13
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
14
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
15 /*
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
16 The data is ready - 3 syscalls:
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
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diff changeset
17 aio_read(), aio_error(), aio_return()
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
18 The data is not ready - 4 (kqueue) or 5 syscalls:
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
19 aio_read(), aio_error(), notifiction,
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
20 aio_error(), aio_return()
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
21 aio_cancel(), aio_error()
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
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22 */
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
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23
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
24 ssize_t ngx_event_aio_read(ngx_connection_t *c, char *buf, size_t size)
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
25 {
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
26 int rc, first, canceled;
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
27 ngx_event_t *ev;
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
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28
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
29 ev = c->read;
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
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30
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
31 canceled = 0;
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
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32
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
33 if (ev->timedout) {
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
34 ngx_set_socket_errno(NGX_ETIMEDOUT);
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
35 ngx_log_error(NGX_LOG_ERR, ev->log, 0, "aio_read() timed out");
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
36
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
37 rc = aio_cancel(c->fd, &ev->aiocb);
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
38 if (rc == -1) {
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
39 ngx_log_error(NGX_LOG_CRIT, ev->log, ngx_errno,
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
40 "aio_cancel() failed");
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
41 return NGX_ERROR;
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
42 }
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
43
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
44 ngx_log_debug(ev->log, "aio_cancel: %d" _ rc);
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
45
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
46 canceled = 1;
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
47
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
48 ev->ready = 1;
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
49 }
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
50
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
51 first = 0;
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
52
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
53 if (!ev->ready) {
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
54 ngx_memzero(&ev->aiocb, sizeof(struct aiocb));
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
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55
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
56 ev->aiocb.aio_fildes = c->fd;
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
57 ev->aiocb.aio_buf = buf;
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
58 ev->aiocb.aio_nbytes = size;
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
59
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
60 #if (HAVE_KQUEUE)
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
61 ev->aiocb.aio_sigevent.sigev_notify_kqueue = kq;
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
62 ev->aiocb.aio_sigevent.sigev_notify = SIGEV_KEVENT;
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
63 ev->aiocb.aio_sigevent.sigev_value.sigval_ptr = ev;
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
64 #endif
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
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65
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
66 if (aio_read(&ev->aiocb) == -1) {
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
67 ngx_log_error(NGX_LOG_CRIT, ev->log, ngx_errno,
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
68 "aio_read() failed");
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
69 return NGX_ERROR;
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
70 }
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
71
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
72 ngx_log_debug(ev->log, "aio_read: OK");
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
73
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
74 ev->active = 1;
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
75 first = 1;
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
76 }
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
77
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
78 ev->ready = 0;
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
79
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
80 rc = aio_error(&ev->aiocb);
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
81 if (rc == -1) {
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
82 ngx_log_error(NGX_LOG_CRIT, ev->log, ngx_errno, "aio_error() failed");
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
83 return NGX_ERROR;
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
84 }
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
85
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
86 if (rc != 0) {
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
87 if (rc == NGX_EINPROGRESS) {
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
88 if (!first) {
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
89 ngx_log_error(NGX_LOG_CRIT, ev->log, rc,
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
90 "aio_read() still in progress");
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
91 }
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
92 return NGX_AGAIN;
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
93 }
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
94
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
95 if (rc == NGX_ECANCELED && canceled) {
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
96 return NGX_ERROR;
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
97 }
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
98
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
99 ngx_log_error(NGX_LOG_CRIT, ev->log, rc, "aio_read() failed");
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
100 return NGX_ERROR;
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
101 }
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
102
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
103 rc = aio_return(&ev->aiocb);
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
104 if (rc == -1) {
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
105 ngx_log_error(NGX_LOG_CRIT, ev->log, ngx_errno, "aio_return() failed");
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
106
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
107 return NGX_ERROR;
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
108 }
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
109
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
110 ngx_log_debug(ev->log, "aio_read: %d" _ rc);
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
111
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
112 return rc;
e8cdc2989cee nginx-0.0.1-2003-02-06-20:21:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff changeset
113 }