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annotate src/os/unix/ngx_readv_chain.c @ 163:fb61ba77beba

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nginx-0.0.1-2003-10-28-18:45:41 import
author Igor Sysoev <igor@sysoev.ru>
date Tue, 28 Oct 2003 15:45:41 +0000
parents 46eb23d9471d
children 84036764e215
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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4534060fde92 nginx-0.0.1-2003-04-10-19:08:54 import
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4534060fde92 nginx-0.0.1-2003-04-10-19:08:54 import
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2 #include <ngx_config.h>
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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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4 #include <ngx_event.h>
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4534060fde92 nginx-0.0.1-2003-04-10-19:08:54 import
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46eb23d9471d nginx-0.0.1-2003-10-22-20:38:26 import
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7 ssize_t ngx_readv_chain(ngx_connection_t *c, ngx_chain_t *chain)
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4534060fde92 nginx-0.0.1-2003-04-10-19:08:54 import
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8 {
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fb61ba77beba nginx-0.0.1-2003-10-28-18:45:41 import
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9 char *prev;
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a7e45c45a95c nginx-0.0.1-2003-04-28-19:06:39 import
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10 ssize_t n;
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17ab1af8c3dd nginx-0.0.1-2003-04-11-20:01:14 import
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11 struct iovec *iov;
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12 ngx_err_t err;
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13 ngx_array_t io;
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15 prev = NULL;
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29bf798b583f nginx-0.0.1-2003-05-15-19:42:53 import
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16 iov = NULL;
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4534060fde92 nginx-0.0.1-2003-04-10-19:08:54 import
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18 ngx_init_array(io, c->pool, 10, sizeof(struct iovec), NGX_ERROR);
4534060fde92 nginx-0.0.1-2003-04-10-19:08:54 import
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fb61ba77beba nginx-0.0.1-2003-10-28-18:45:41 import
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20 /* coalesce the neighbouring hunks */
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ad5f382c9e7d nginx-0.0.1-2003-10-19-23:57:23 import
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46eb23d9471d nginx-0.0.1-2003-10-22-20:38:26 import
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22 while (chain) {
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fb61ba77beba nginx-0.0.1-2003-10-28-18:45:41 import
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23 if (prev == chain->hunk->last) {
fb61ba77beba nginx-0.0.1-2003-10-28-18:45:41 import
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24 iov->iov_len += chain->hunk->end - chain->hunk->last;
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26 } else {
fb61ba77beba nginx-0.0.1-2003-10-28-18:45:41 import
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27 ngx_test_null(iov, ngx_push_array(&io), NGX_ERROR);
fb61ba77beba nginx-0.0.1-2003-10-28-18:45:41 import
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28 iov->iov_base = chain->hunk->last;
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29 iov->iov_len = chain->hunk->end - chain->hunk->last;
fb61ba77beba nginx-0.0.1-2003-10-28-18:45:41 import
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30 }
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fb61ba77beba nginx-0.0.1-2003-10-28-18:45:41 import
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32 prev = chain->hunk->end;
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46eb23d9471d nginx-0.0.1-2003-10-22-20:38:26 import
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33 chain = chain->next;
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34 }
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869b10be682f nginx-0.0.1-2003-04-14-21:04:58 import
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36 ngx_log_debug(c->log, "recv: %d:%d" _ io.nelts _ iov->iov_len);
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4534060fde92 nginx-0.0.1-2003-04-10-19:08:54 import
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38 n = readv(c->fd, (struct iovec *) io.elts, io.nelts);
4534060fde92 nginx-0.0.1-2003-04-10-19:08:54 import
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40 if (n == 0) {
fb61ba77beba nginx-0.0.1-2003-10-28-18:45:41 import
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41 c->read->eof = 1;
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fb61ba77beba nginx-0.0.1-2003-10-28-18:45:41 import
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43 } else if (n == -1) {
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4534060fde92 nginx-0.0.1-2003-04-10-19:08:54 import
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44 c->read->ready = 0;
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45 c->read->error = 1;
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869b10be682f nginx-0.0.1-2003-04-14-21:04:58 import
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47 err = ngx_errno;
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4534060fde92 nginx-0.0.1-2003-04-10-19:08:54 import
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48 if (err == NGX_EAGAIN) {
4534060fde92 nginx-0.0.1-2003-04-10-19:08:54 import
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49 ngx_log_error(NGX_LOG_INFO, c->log, err, "readv() returned EAGAIN");
4534060fde92 nginx-0.0.1-2003-04-10-19:08:54 import
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50 return NGX_AGAIN;
4534060fde92 nginx-0.0.1-2003-04-10-19:08:54 import
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51 }
4534060fde92 nginx-0.0.1-2003-04-10-19:08:54 import
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4534060fde92 nginx-0.0.1-2003-04-10-19:08:54 import
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53 ngx_log_error(NGX_LOG_ERR, c->log, err, "readv() failed");
4534060fde92 nginx-0.0.1-2003-04-10-19:08:54 import
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54 return NGX_ERROR;
4534060fde92 nginx-0.0.1-2003-04-10-19:08:54 import
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55 }
4534060fde92 nginx-0.0.1-2003-04-10-19:08:54 import
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4534060fde92 nginx-0.0.1-2003-04-10-19:08:54 import
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57 return n;
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58 }