Mercurial > hg > nginx

annotate src/os/unix/ngx_aio_read.c @ 184:1bf718ce0dde

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
nginx-0.0.1-2003-11-14-10:20:34 import
author Igor Sysoev <igor@sysoev.ru>
date Fri, 14 Nov 2003 07:20:34 +0000
parents 389d7ee9fa60
children 70e1c7d2b83d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
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1
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
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2 #include <ngx_config.h>
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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3 #include <ngx_core.h>
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6dfda4cf5200 nginx-0.0.1-2003-06-11-19:28:34 import
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parents: 93
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4 #include <ngx_event.h>
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738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
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5 #include <ngx_aio.h>
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
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6
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
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7 #if (HAVE_KQUEUE)
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
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8 #include <ngx_kqueue_module.h>
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
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9 #endif
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
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10
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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11
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
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12 /*
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84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
Igor Sysoev <igor@sysoev.ru>
parents: 103
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13 * the ready data requires 3 syscalls:
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
Igor Sysoev <igor@sysoev.ru>
parents: 103
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14 * aio_write(), aio_error(), aio_return()
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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parents: 103
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15 * the non-ready data requires 4 (kqueue) or 5 syscalls:
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
Igor Sysoev <igor@sysoev.ru>
parents: 103
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16 * aio_write(), aio_error(), notifiction, aio_error(), aio_return()
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
Igor Sysoev <igor@sysoev.ru>
parents: 103
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17 * timeout, aio_cancel(), aio_error()
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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parents: 103
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18 */
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738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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19
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
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20 ssize_t ngx_aio_read(ngx_connection_t *c, char *buf, size_t size)
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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21 {
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22 int n;
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
Igor Sysoev <igor@sysoev.ru>
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23 ngx_event_t *rev;
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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24
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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25 rev = c->read;
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26
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389d7ee9fa60 nginx-0.0.1-2003-10-30-11:51:06 import
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27 if (!rev->ready) {
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1bf718ce0dde nginx-0.0.1-2003-11-14-10:20:34 import
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28 ngx_log_error(NGX_LOG_ALERT, c->log, 0, "SECOND AIO POST");
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84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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29 return NGX_AGAIN;
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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30 }
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31
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1bf718ce0dde nginx-0.0.1-2003-11-14-10:20:34 import
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32 ngx_log_debug(c->log, "rev->complete: %d" _ rev->complete);
1bf718ce0dde nginx-0.0.1-2003-11-14-10:20:34 import
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33 ngx_log_debug(c->log, "aio size: %d" _ size);
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34
389d7ee9fa60 nginx-0.0.1-2003-10-30-11:51:06 import
Igor Sysoev <igor@sysoev.ru>
parents: 164
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35 if (!rev->complete) {
164
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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parents: 103
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36 ngx_memzero(&rev->aiocb, sizeof(struct aiocb));
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37
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38 rev->aiocb.aio_fildes = c->fd;
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
Igor Sysoev <igor@sysoev.ru>
parents: 103
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39 rev->aiocb.aio_buf = buf;
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
Igor Sysoev <igor@sysoev.ru>
parents: 103
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40 rev->aiocb.aio_nbytes = size;
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738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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41
164
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42 #if (HAVE_KQUEUE)
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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parents: 103
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43 rev->aiocb.aio_sigevent.sigev_notify_kqueue = ngx_kqueue;
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
Igor Sysoev <igor@sysoev.ru>
parents: 103
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44 rev->aiocb.aio_sigevent.sigev_notify = SIGEV_KEVENT;
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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parents: 103
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45 rev->aiocb.aio_sigevent.sigev_value.sigval_ptr = rev;
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
Igor Sysoev <igor@sysoev.ru>
parents: 103
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46 #endif
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
Igor Sysoev <igor@sysoev.ru>
parents: 103
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47
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
Igor Sysoev <igor@sysoev.ru>
parents: 103
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48 if (aio_read(&rev->aiocb) == -1) {
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
Igor Sysoev <igor@sysoev.ru>
parents: 103
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49 ngx_log_error(NGX_LOG_CRIT, rev->log, ngx_errno,
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
Igor Sysoev <igor@sysoev.ru>
parents: 103
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50 "aio_read() failed");
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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parents: 103
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51 rev->error = 1;
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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52 return NGX_ERROR;
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
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53 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
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54
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1bf718ce0dde nginx-0.0.1-2003-11-14-10:20:34 import
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parents: 166
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55 ngx_log_debug(c->log, "aio_read: #%d OK" _ c->fd);
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56
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84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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57 rev->active = 1;
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389d7ee9fa60 nginx-0.0.1-2003-10-30-11:51:06 import
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parents: 164
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58 rev->ready = 0;
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59 }
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60
166
389d7ee9fa60 nginx-0.0.1-2003-10-30-11:51:06 import
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61 rev->complete = 0;
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62
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84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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63 n = aio_error(&rev->aiocb);
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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parents: 103
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64 if (n == -1) {
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1bf718ce0dde nginx-0.0.1-2003-11-14-10:20:34 import
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65 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno, "aio_error() failed");
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66 rev->error = 1;
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67 return NGX_ERROR;
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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68 }
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69
164
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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70 if (n != 0) {
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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71 if (n == NGX_EINPROGRESS) {
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389d7ee9fa60 nginx-0.0.1-2003-10-30-11:51:06 import
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72 if (rev->ready) {
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1bf718ce0dde nginx-0.0.1-2003-11-14-10:20:34 import
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73 ngx_log_error(NGX_LOG_ALERT, c->log, n,
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738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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74 "aio_read() still in progress");
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389d7ee9fa60 nginx-0.0.1-2003-10-30-11:51:06 import
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75 rev->ready = 0;
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76 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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77 return NGX_AGAIN;
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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78 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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79
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1bf718ce0dde nginx-0.0.1-2003-11-14-10:20:34 import
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80 ngx_log_error(NGX_LOG_CRIT, c->log, n, "aio_read() failed");
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84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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81 rev->error = 1;
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389d7ee9fa60 nginx-0.0.1-2003-10-30-11:51:06 import
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parents: 164
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82 rev->ready = 0;
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738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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83 return NGX_ERROR;
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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84 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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85
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84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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86 n = aio_return(&rev->aiocb);
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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parents: 103
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87 if (n == -1) {
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1bf718ce0dde nginx-0.0.1-2003-11-14-10:20:34 import
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parents: 166
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88 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno,
164
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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89 "aio_return() failed");
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738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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90
164
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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parents: 103
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91 rev->error = 1;
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389d7ee9fa60 nginx-0.0.1-2003-10-30-11:51:06 import
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parents: 164
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92 rev->ready = 0;
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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93 return NGX_ERROR;
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
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94 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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95
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389d7ee9fa60 nginx-0.0.1-2003-10-30-11:51:06 import
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parents: 164
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96 ngx_log_debug(rev->log, "aio_read: #%d %d" _ c->fd _ n);
389d7ee9fa60 nginx-0.0.1-2003-10-30-11:51:06 import
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parents: 164
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97
389d7ee9fa60 nginx-0.0.1-2003-10-30-11:51:06 import
Igor Sysoev <igor@sysoev.ru>
parents: 164
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98 if (n == 0) {
389d7ee9fa60 nginx-0.0.1-2003-10-30-11:51:06 import
Igor Sysoev <igor@sysoev.ru>
parents: 164
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99 rev->eof = 1;
389d7ee9fa60 nginx-0.0.1-2003-10-30-11:51:06 import
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parents: 164
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100 rev->ready = 0;
389d7ee9fa60 nginx-0.0.1-2003-10-30-11:51:06 import
Igor Sysoev <igor@sysoev.ru>
parents: 164
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101 } else {
389d7ee9fa60 nginx-0.0.1-2003-10-30-11:51:06 import
Igor Sysoev <igor@sysoev.ru>
parents: 164
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102 rev->ready = 1;
389d7ee9fa60 nginx-0.0.1-2003-10-30-11:51:06 import
Igor Sysoev <igor@sysoev.ru>
parents: 164
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103 }
389d7ee9fa60 nginx-0.0.1-2003-10-30-11:51:06 import
Igor Sysoev <igor@sysoev.ru>
parents: 164
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104
164
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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parents: 103
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105 rev->active = 0;
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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parents: 103
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106
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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107 return n;
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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108 }