Mercurial > hg > nginx

annotate src/os/unix/ngx_aio_write_chain.c @ 362:7650aea1816f

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
nginx-0.0.7-2004-06-21-19:59:32 import
author Igor Sysoev <igor@sysoev.ru>
date Mon, 21 Jun 2004 15:59:32 +0000
parents 6bdf858bff8c
children da8c5707af39
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
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1
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
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2 #include <ngx_config.h>
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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3 #include <ngx_core.h>
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ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import
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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
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5 #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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7
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7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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8 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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9 off_t limit)
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36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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10 {
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84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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11 int n;
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4a3f18406832 nginx-0.0.3-2004-03-30-10:27:36 import
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12 u_char *buf, *prev;
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7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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13 off_t send, sent;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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14 size_t len;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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15 ssize_t size;
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84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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16 ngx_err_t err;
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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17 ngx_chain_t *cl;
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36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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18
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7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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19 send = 0;
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36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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20 sent = 0;
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21 cl = in;
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22
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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23 while (cl) {
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24
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25 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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26 cl = cl->next;
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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27 continue;
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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28 }
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ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import
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ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import
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30 /* we can post the single aio operation only */
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31
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389d7ee9fa60 nginx-0.0.1-2003-10-30-11:51:06 import
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32 if (!c->write->ready) {
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84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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33 return cl;
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34 }
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35
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36 buf = cl->buf->pos;
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37 prev = buf;
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38 len = 0;
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39
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40 /* coalesce the neighbouring bufs */
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7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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42 while (cl && prev == cl->buf->pos && send < limit) {
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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43 if (ngx_buf_special(cl->buf)) {
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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44 continue;
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45 }
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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46
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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47 size = cl->buf->last - cl->buf->pos;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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48
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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49 if (send + size > limit) {
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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50 size = limit - send;
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
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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53 len += size;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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54 prev = cl->buf->pos + size;
7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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55 send += size;
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56 cl = cl->next;
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36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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57 }
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58
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7650aea1816f nginx-0.0.7-2004-06-21-19:59:32 import
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59 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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61 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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63 if (n == NGX_ERROR) {
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ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import
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64 return NGX_CHAIN_ERROR;
ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import
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65 }
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66
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67 if (n > 0) {
84036764e215 nginx-0.0.1-2003-10-29-11:30:44 import
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68 sent += n;
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69 c->sent += n;
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70 }
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36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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72 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0,
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73 "aio_write sent: " OFF_T_FMT, c->sent);
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74
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75 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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77 if (sent >= cl->buf->last - cl->buf->pos) {
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78 sent -= cl->buf->last - cl->buf->pos;
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79 cl->buf->pos = cl->buf->last;
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80
ef8c87afcfc5 nginx-0.0.1-2003-10-12-20:49:16 import
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81 continue;
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82 }
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83
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84 cl->buf->pos += sent;
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85
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36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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86 break;
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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87 }
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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88 }
36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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89
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90 return cl;
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36d2c25cc9bb nginx-0.0.1-2003-02-26-23:21:43 import
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91 }