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comparison src/os/unix/ngx_freebsd_sendfile_chain.c @ 290:87e73f067470

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nginx-0.0.2-2004-03-16-10:10:12 import
author Igor Sysoev <igor@sysoev.ru>
date Tue, 16 Mar 2004 07:10:12 +0000
parents d4e65d74db9f
children ee394e997c77
comparison
equal deleted inserted replaced
289:0750faf8d7e3 290:87e73f067470
12 /* 12 /*
13 * Although FreeBSD sendfile() allows to pass a header and a trailer 13 * Although FreeBSD sendfile() allows to pass a header and a trailer
14 * it never sends a header with a part of the file in one packet until 14 * it never sends a header with a part of the file in one packet until
15 * FreeBSD 5.2-STABLE. Besides over the fast ethernet connection sendfile() 15 * FreeBSD 5.2-STABLE. Besides over the fast ethernet connection sendfile()
16 * can send the partially filled packets, i.e. the 8 file pages can be sent 16 * can send the partially filled packets, i.e. the 8 file pages can be sent
17 * as 11 full 1460-bytes packets, then one incomplete 324-bytes packet, and 17 * as the 11 full 1460-bytes packets, then one incomplete 324-bytes packet,
18 * then again 11 full 1460-bytes packets. 18 * and then again the 11 full 1460-bytes packets.
19 * 19 *
20 * So we use the TCP_NOPUSH option (similar to Linux's TCP_CORK) 20 * So we use the TCP_NOPUSH option (similar to Linux's TCP_CORK)
21 * to postpone the sending - it not only sends a header and the first part 21 * to postpone the sending - it not only sends a header and the first part
22 * of the file in one packet but also sends file pages in the full packets. 22 * of the file in one packet but also sends file pages in the full packets.
23 * 23 *
29 29
30 30
31 ngx_chain_t *ngx_freebsd_sendfile_chain(ngx_connection_t *c, ngx_chain_t *in) 31 ngx_chain_t *ngx_freebsd_sendfile_chain(ngx_connection_t *c, ngx_chain_t *in)
32 { 32 {
33 int rc; 33 int rc;
34 char *prev; 34 u_char *prev;
35 off_t sent, fprev; 35 off_t sent, fprev;
36 size_t hsize, fsize; 36 size_t hsize, fsize;
37 ssize_t size; 37 ssize_t size;
38 ngx_int_t eintr, eagain; 38 ngx_int_t eintr, eagain;
39 struct iovec *iov; 39 struct iovec *iov;
91 if (prev == cl->hunk->pos) { 91 if (prev == cl->hunk->pos) {
92 iov->iov_len += cl->hunk->last - cl->hunk->pos; 92 iov->iov_len += cl->hunk->last - cl->hunk->pos;
93 93
94 } else { 94 } else {
95 ngx_test_null(iov, ngx_push_array(&header), NGX_CHAIN_ERROR); 95 ngx_test_null(iov, ngx_push_array(&header), NGX_CHAIN_ERROR);
96 iov->iov_base = cl->hunk->pos; 96 iov->iov_base = (void *) cl->hunk->pos;
97 iov->iov_len = cl->hunk->last - cl->hunk->pos; 97 iov->iov_len = cl->hunk->last - cl->hunk->pos;
98 } 98 }
99 99
100 prev = cl->hunk->last; 100 prev = cl->hunk->last;
101 hsize += cl->hunk->last - cl->hunk->pos; 101 hsize += cl->hunk->last - cl->hunk->pos;
143 iov->iov_len += cl->hunk->last - cl->hunk->pos; 143 iov->iov_len += cl->hunk->last - cl->hunk->pos;
144 144
145 } else { 145 } else {
146 ngx_test_null(iov, ngx_push_array(&trailer), 146 ngx_test_null(iov, ngx_push_array(&trailer),
147 NGX_CHAIN_ERROR); 147 NGX_CHAIN_ERROR);
148 iov->iov_base = cl->hunk->pos; 148 iov->iov_base = (void *) cl->hunk->pos;
149 iov->iov_len = cl->hunk->last - cl->hunk->pos; 149 iov->iov_len = cl->hunk->last - cl->hunk->pos;
150 } 150 }
151 151
152 prev = cl->hunk->last; 152 prev = cl->hunk->last;
153 } 153 }