Mercurial > hg > nginx
comparison src/event/ngx_event_aio_write.c @ 59:e8cdc2989cee
nginx-0.0.1-2003-02-06-20:21:13 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Thu, 06 Feb 2003 17:21:13 +0000 |
parents | |
children | 36d2c25cc9bb |
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58:6b13b1cadabe | 59:e8cdc2989cee |
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1 | |
2 #include <ngx_config.h> | |
3 #include <ngx_core.h> | |
4 #include <ngx_errno.h> | |
5 #include <ngx_log.h> | |
6 #include <ngx_recv.h> | |
7 #include <ngx_connection.h> | |
8 | |
9 #if (HAVE_KQUEUE) | |
10 #include <ngx_kqueue_module.h> | |
11 #endif | |
12 | |
13 | |
14 /* | |
15 The data is ready - 3 syscalls: | |
16 aio_write(), aio_error(), aio_return() | |
17 The data is not ready - 4 (kqueue) or 5 syscalls: | |
18 aio_write(), aio_error(), notifiction, | |
19 aio_error(), aio_return() | |
20 aio_cancel(), aio_error() | |
21 */ | |
22 | |
23 ssize_t ngx_event_aio_write(ngx_connection_t *c, char *buf, size_t size) | |
24 { | |
25 int rc, first, canceled; | |
26 ngx_event_t *ev; | |
27 | |
28 ev = c->write; | |
29 | |
30 canceled = 0; | |
31 | |
32 ngx_log_debug(ev->log, "aio: ev->ready: %d" _ ev->ready); | |
33 ngx_log_debug(ev->log, "aio: aiocb: %08x" _ &ev->aiocb); | |
34 | |
35 if (ev->timedout) { | |
36 ngx_set_socket_errno(NGX_ETIMEDOUT); | |
37 ngx_log_error(NGX_LOG_ERR, ev->log, 0, "aio_write() timed out"); | |
38 | |
39 rc = aio_cancel(c->fd, &ev->aiocb); | |
40 if (rc == -1) { | |
41 ngx_log_error(NGX_LOG_CRIT, ev->log, ngx_errno, | |
42 "aio_cancel() failed"); | |
43 return NGX_ERROR; | |
44 } | |
45 | |
46 ngx_log_debug(ev->log, "aio_cancel: %d" _ rc); | |
47 | |
48 canceled = 1; | |
49 | |
50 ev->ready = 1; | |
51 } | |
52 | |
53 first = 0; | |
54 | |
55 if (!ev->ready) { | |
56 ngx_memzero(&ev->aiocb, sizeof(struct aiocb)); | |
57 | |
58 ev->aiocb.aio_fildes = c->fd; | |
59 ev->aiocb.aio_buf = buf; | |
60 ev->aiocb.aio_nbytes = size; | |
61 | |
62 #if (HAVE_KQUEUE) | |
63 ev->aiocb.aio_sigevent.sigev_notify_kqueue = kq; | |
64 ev->aiocb.aio_sigevent.sigev_notify = SIGEV_KEVENT; | |
65 ev->aiocb.aio_sigevent.sigev_value.sigval_ptr = ev; | |
66 #endif | |
67 | |
68 if (aio_write(&ev->aiocb) == -1) { | |
69 ngx_log_error(NGX_LOG_CRIT, ev->log, ngx_errno, | |
70 "aio_write() failed"); | |
71 return NGX_ERROR; | |
72 } | |
73 | |
74 ngx_log_debug(ev->log, "aio_write: OK"); | |
75 | |
76 ev->active = 1; | |
77 first = 1; | |
78 } | |
79 | |
80 ev->ready = 0; | |
81 | |
82 rc = aio_error(&ev->aiocb); | |
83 if (rc == -1) { | |
84 ngx_log_error(NGX_LOG_CRIT, ev->log, ngx_errno, "aio_error() failed"); | |
85 return NGX_ERROR; | |
86 } | |
87 | |
88 if (rc != 0) { | |
89 if (rc == NGX_EINPROGRESS) { | |
90 if (!first) { | |
91 ngx_log_error(NGX_LOG_CRIT, ev->log, rc, | |
92 "aio_write() still in progress"); | |
93 } | |
94 return NGX_AGAIN; | |
95 } | |
96 | |
97 if (rc == NGX_ECANCELED && canceled) { | |
98 return NGX_ERROR; | |
99 } | |
100 | |
101 ngx_log_error(NGX_LOG_CRIT, ev->log, rc, "aio_write() failed"); | |
102 return NGX_ERROR; | |
103 } | |
104 | |
105 rc = aio_return(&ev->aiocb); | |
106 if (rc == -1) { | |
107 ngx_log_error(NGX_LOG_CRIT, ev->log, ngx_errno, "aio_return() failed"); | |
108 | |
109 return NGX_ERROR; | |
110 } | |
111 | |
112 ngx_log_debug(ev->log, "aio_write: %d" _ rc); | |
113 | |
114 return rc; | |
115 } |