Mercurial > hg > nginx

annotate src/os/unix/ngx_aio_write_chain.c @ 441:da8c5707af39

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nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
author Igor Sysoev <igor@sysoev.ru>
date Tue, 28 Sep 2004 08:34:51 +0000
parents 7650aea1816f
children 42d11f017717
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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441
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
Igor Sysoev <igor@sysoev.ru>
parents: 362
diff changeset
1
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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2 /*
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
Igor Sysoev <igor@sysoev.ru>
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3 * Copyright (C) 2002-2004 Igor Sysoev
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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parents: 362
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4 */
da8c5707af39 nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
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5
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36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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6
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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7 #include <ngx_config.h>
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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parents:
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8 #include <ngx_core.h>
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ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import
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9 #include <ngx_event.h>
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738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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10 #include <ngx_aio.h>
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36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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12
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7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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13 ngx_chain_t *ngx_aio_write_chain(ngx_connection_t *c, ngx_chain_t *in,
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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14 off_t limit)
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36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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15 {
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84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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16 int n;
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4a3f18406832 nginx-0.0.3-2004-03-30-10:27:36 import
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17 u_char *buf, *prev;
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7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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18 off_t send, sent;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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19 size_t len;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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20 ssize_t size;
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84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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21 ngx_err_t err;
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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22 ngx_chain_t *cl;
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23
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24 send = 0;
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25 sent = 0;
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26 cl = in;
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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27
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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28 while (cl) {
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29
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30 if (cl->buf->pos == cl->buf->last) {
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84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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31 cl = cl->next;
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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32 continue;
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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33 }
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34
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35 /* we can post the single aio operation only */
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36
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389d7ee9fa60 nginx-0.0.1-2003-10-30-11:51:06 import
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37 if (!c->write->ready) {
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84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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38 return cl;
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39 }
ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import
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40
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41 buf = cl->buf->pos;
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84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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42 prev = buf;
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7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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43 len = 0;
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36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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44
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45 /* coalesce the neighbouring bufs */
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46
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7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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parents: 343
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47 while (cl && prev == cl->buf->pos && send < limit) {
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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parents: 343
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48 if (ngx_buf_special(cl->buf)) {
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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parents: 343
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49 continue;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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50 }
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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51
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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52 size = cl->buf->last - cl->buf->pos;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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53
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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parents: 343
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54 if (send + size > limit) {
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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parents: 343
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55 size = limit - send;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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56 }
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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57
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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58 len += size;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents: 343
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59 prev = cl->buf->pos + size;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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60 send += size;
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61 cl = cl->next;
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62 }
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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63
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7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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64 n = ngx_aio_write(c, buf, len);
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36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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66 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, "aio_write: %d", n);
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36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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67
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84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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68 if (n == NGX_ERROR) {
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ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import
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69 return NGX_CHAIN_ERROR;
ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import
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70 }
ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import
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71
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72 if (n > 0) {
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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73 sent += n;
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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74 c->sent += n;
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ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import
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75 }
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36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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76
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77 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
70e1c7d2b83d nginx-0.0.2-2004-02-11-20:08:49 import
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78 "aio_write sent: " OFF_T_FMT, c->sent);
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ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import
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79
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84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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80 for (cl = in; cl; cl = cl->next) {
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36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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81
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82 if (sent >= cl->buf->last - cl->buf->pos) {
6bdf858bff8c nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
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83 sent -= cl->buf->last - cl->buf->pos;
6bdf858bff8c nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
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84 cl->buf->pos = cl->buf->last;
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ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import
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85
ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import
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86 continue;
ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import
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parents: 95
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87 }
ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import
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parents: 95
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88
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89 cl->buf->pos += sent;
144
ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import
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diff changeset
90
63
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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parents:
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91 break;
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
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92 }
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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93 }
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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94
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84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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95 return cl;
63
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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96 }