Mercurial > hg > nginx

annotate src/os/unix/ngx_writev_chain.c @ 103:6dfda4cf5200

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
nginx-0.0.1-2003-06-11-19:28:34 import
author Igor Sysoev <igor@sysoev.ru>
date Wed, 11 Jun 2003 15:28:34 +0000
parents 8220378432a8
children ef8c87afcfc5
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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1
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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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>
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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4
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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5
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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6 ngx_chain_t *ngx_writev_chain(ngx_connection_t *c, ngx_chain_t *in)
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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7 {
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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8 char *prev;
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6dfda4cf5200 nginx-0.0.1-2003-06-11-19:28:34 import
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9 ssize_t n, size;
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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10 off_t sent;
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
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11 struct iovec *iov;
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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12 ngx_err_t err;
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6dfda4cf5200 nginx-0.0.1-2003-06-11-19:28:34 import
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13 ngx_array_t iovecs;
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738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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14 ngx_chain_t *ce;
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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15
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6dfda4cf5200 nginx-0.0.1-2003-06-11-19:28:34 import
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16 ngx_init_array(iovecs, c->pool, 10, sizeof(struct iovec), NGX_CHAIN_ERROR);
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738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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17
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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18 prev = NULL;
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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19 iov = NULL;
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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20
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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21 /* create the iovec and coalesce the neighbouring chain entries */
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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22 for (ce = in; ce; ce = ce->next) {
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23
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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24 if (prev == ce->hunk->pos) {
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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25 iov->iov_len += ce->hunk->last - ce->hunk->pos;
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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26 prev = ce->hunk->last;
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27
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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28 } else {
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6dfda4cf5200 nginx-0.0.1-2003-06-11-19:28:34 import
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29 ngx_test_null(iov, ngx_push_array(&iovecs), NGX_CHAIN_ERROR);
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738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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30 iov->iov_base = ce->hunk->pos;
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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31 iov->iov_len = ce->hunk->last - ce->hunk->pos;
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32 prev = ce->hunk->last;
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33 }
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34 }
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35
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6dfda4cf5200 nginx-0.0.1-2003-06-11-19:28:34 import
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36 n = writev(c->fd, iovecs.elts, iovecs.nelts);
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37
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38 if (n == -1) {
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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39 err = ngx_errno;
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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40 if (err == NGX_EAGAIN) {
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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41 ngx_log_error(NGX_LOG_INFO, c->log, err, "writev() EAGAIN");
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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42
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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43 } else if (err == NGX_EINTR) {
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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44 ngx_log_error(NGX_LOG_INFO, c->log, err, "writev() EINTR");
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45
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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46 } else {
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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47 ngx_log_error(NGX_LOG_CRIT, c->log, err, "writev() failed");
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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48 return NGX_CHAIN_ERROR;
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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49 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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50 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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51
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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52 sent = n > 0 ? n : 0;
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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53
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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54 #if (NGX_DEBUG_WRITE_CHAIN)
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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55 ngx_log_debug(c->log, "writev: %qd" _ sent);
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56 #endif
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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57
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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58 c->sent += sent;
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59
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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60 for (ce = in; ce && sent > 0; ce = ce->next) {
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61
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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62 size = ce->hunk->last - ce->hunk->pos;
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63
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8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
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64 ngx_log_debug(c->log, "SIZE: %d" _ size);
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65
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66 if (sent >= size) {
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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67 sent -= size;
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68
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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69 if (ce->hunk->type & NGX_HUNK_IN_MEMORY) {
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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70 ce->hunk->pos = ce->hunk->last;
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71 }
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72
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8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
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73 #if 0
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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74 if (ce->hunk->type & NGX_HUNK_FILE) {
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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75 ce->hunk->file_pos = ce->hunk->file_last;
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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76 }
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8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
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77 #endif
93
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 continue;
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80 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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81
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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82 if (ce->hunk->type & NGX_HUNK_IN_MEMORY) {
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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83 ce->hunk->pos += sent;
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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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8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
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86 #if 0
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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87 if (ce->hunk->type & NGX_HUNK_FILE) {
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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88 ce->hunk->file_pos += sent;
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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89 }
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8220378432a8 nginx-0.0.1-2003-05-22-19:23:47 import
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90 #endif
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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91
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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92 break;
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93 }
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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6dfda4cf5200 nginx-0.0.1-2003-06-11-19:28:34 import
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95 ngx_destroy_array(&iovecs);
93
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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96
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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97 return ce;
738fe44c70d5 nginx-0.0.1-2003-05-21-17:28:21 import
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98 }