Mercurial > hg > nginx
annotate src/os/unix/ngx_freebsd_sendfile_chain.c @ 5854:b63e829621ab
Generalized definitions of the number of preallocated iovec's.
No functional changes.
author | Valentin Bartenev <vbart@nginx.com> |
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date | Wed, 13 Aug 2014 15:11:45 +0400 |
parents | 150df089fe47 |
children | 6bbad2e73245 |
rev | line source |
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
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5 */ |
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6 |
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7 |
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8 #include <ngx_config.h> |
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9 #include <ngx_core.h> |
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10 #include <ngx_event.h> |
63
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11 |
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12 |
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13 /* |
479 | 14 * Although FreeBSD sendfile() allows to pass a header and a trailer, |
4133
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15 * it cannot send a header with a part of the file in one packet until |
479 | 16 * FreeBSD 5.3. Besides, over the fast ethernet connection sendfile() |
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17 * may send the partially filled packets, i.e. the 8 file pages may be sent |
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18 * as the 11 full 1460-bytes packets, then one incomplete 324-bytes packet, |
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19 * and then again the 11 full 1460-bytes packets. |
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20 * |
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21 * Therefore we use the TCP_NOPUSH option (similar to Linux's TCP_CORK) |
479 | 22 * to postpone the sending - it not only sends a header and the first part of |
23 * the file in one packet, but also sends the file pages in the full packets. | |
253
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24 * |
501 | 25 * But until FreeBSD 4.5 turning TCP_NOPUSH off does not flush a pending |
26 * data that less than MSS, so that data may be sent with 5 second delay. | |
27 * So we do not use TCP_NOPUSH on FreeBSD prior to 4.5, although it can be used | |
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28 * for non-keepalive HTTP connections. |
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29 */ |
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30 |
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31 |
501 | 32 ngx_chain_t * |
33 ngx_freebsd_sendfile_chain(ngx_connection_t *c, ngx_chain_t *in, off_t limit) | |
63
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34 { |
3065 | 35 int rc, flags; |
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36 u_char *prev; |
473 | 37 off_t size, send, prev_send, aligned, sent, fprev; |
38 size_t header_size, file_size; | |
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39 ngx_uint_t eintr, eagain; |
63
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40 ngx_err_t err; |
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41 ngx_buf_t *file; |
63
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42 ngx_array_t header, trailer; |
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43 ngx_event_t *wev; |
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44 ngx_chain_t *cl; |
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45 struct sf_hdtr hdtr; |
5854
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46 struct iovec *iov; |
b63e829621ab
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47 struct iovec headers[NGX_IOVS_PREALLOCATE]; |
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48 struct iovec trailers[NGX_IOVS_PREALLOCATE]; |
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49 |
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50 wev = c->write; |
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51 |
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52 if (!wev->ready) { |
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53 return in; |
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54 } |
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55 |
469 | 56 #if (NGX_HAVE_KQUEUE) |
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57 |
587 | 58 if ((ngx_event_flags & NGX_USE_KQUEUE_EVENT) && wev->pending_eof) { |
537 | 59 (void) ngx_connection_error(c, wev->kq_errno, |
60 "kevent() reported about an closed connection"); | |
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61 wev->error = 1; |
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62 return NGX_CHAIN_ERROR; |
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63 } |
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64 |
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65 #endif |
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66 |
473 | 67 /* the maximum limit size is the maximum size_t value - the page size */ |
68 | |
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69 if (limit == 0 || limit > (off_t) (NGX_MAX_SIZE_T_VALUE - ngx_pagesize)) { |
477 | 70 limit = NGX_MAX_SIZE_T_VALUE - ngx_pagesize; |
473 | 71 } |
72 | |
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73 send = 0; |
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74 eagain = 0; |
3065 | 75 flags = 0; |
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76 |
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77 header.elts = headers; |
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78 header.size = sizeof(struct iovec); |
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79 header.nalloc = NGX_IOVS_PREALLOCATE; |
428
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80 header.pool = c->pool; |
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81 |
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82 trailer.elts = trailers; |
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83 trailer.size = sizeof(struct iovec); |
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84 trailer.nalloc = NGX_IOVS_PREALLOCATE; |
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85 trailer.pool = c->pool; |
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86 |
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87 for ( ;; ) { |
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88 file = NULL; |
473 | 89 file_size = 0; |
90 header_size = 0; | |
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91 eintr = 0; |
473 | 92 prev_send = send; |
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93 |
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94 header.nelts = 0; |
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95 trailer.nelts = 0; |
96
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96 |
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97 /* create the header iovec and coalesce the neighbouring bufs */ |
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98 |
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99 prev = NULL; |
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100 iov = NULL; |
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101 |
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102 for (cl = in; cl && send < limit; cl = cl->next) { |
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103 |
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104 if (ngx_buf_special(cl->buf)) { |
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105 continue; |
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106 } |
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107 |
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108 if (!ngx_buf_in_memory_only(cl->buf)) { |
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109 break; |
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110 } |
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111 |
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112 size = cl->buf->last - cl->buf->pos; |
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113 |
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114 if (send + size > limit) { |
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115 size = limit - send; |
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116 } |
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117 |
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118 if (prev == cl->buf->pos) { |
473 | 119 iov->iov_len += (size_t) size; |
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120 |
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121 } else { |
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122 if (header.nelts >= IOV_MAX){ |
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123 break; |
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4572
diff
changeset
|
124 } |
089cc5154c1e
IOV_MAX handling microoptimization.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4572
diff
changeset
|
125 |
501 | 126 iov = ngx_array_push(&header); |
127 if (iov == NULL) { | |
428
5e73d0ea4dab
nginx-0.0.11-2004-09-16-20:10:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
402
diff
changeset
|
128 return NGX_CHAIN_ERROR; |
5e73d0ea4dab
nginx-0.0.11-2004-09-16-20:10:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
402
diff
changeset
|
129 } |
5e73d0ea4dab
nginx-0.0.11-2004-09-16-20:10:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
402
diff
changeset
|
130 |
343
6bdf858bff8c
nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
Igor Sysoev <igor@sysoev.ru>
parents:
297
diff
changeset
|
131 iov->iov_base = (void *) cl->buf->pos; |
473 | 132 iov->iov_len = (size_t) size; |
143
5526213be452
nginx-0.0.1-2003-10-10-19:10:50 import
Igor Sysoev <igor@sysoev.ru>
parents:
142
diff
changeset
|
133 } |
63
36d2c25cc9bb
nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
134 |
473 | 135 prev = cl->buf->pos + (size_t) size; |
136 header_size += (size_t) size; | |
361
446782c909b3
nginx-0.0.7-2004-06-20-23:54:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
344
diff
changeset
|
137 send += size; |
96
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
138 } |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
139 |
142
cb77c084acdb
nginx-0.0.1-2003-10-09-11:00:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
103
diff
changeset
|
140 |
362
7650aea1816f
nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
141 if (cl && cl->buf->in_file && send < limit) { |
343
6bdf858bff8c
nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
Igor Sysoev <igor@sysoev.ru>
parents:
297
diff
changeset
|
142 file = cl->buf; |
152
fb48bf4fea1c
nginx-0.0.1-2003-10-21-11:47:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
143 |
343
6bdf858bff8c
nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
Igor Sysoev <igor@sysoev.ru>
parents:
297
diff
changeset
|
144 /* coalesce the neighbouring file bufs */ |
152
fb48bf4fea1c
nginx-0.0.1-2003-10-21-11:47:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
145 |
361
446782c909b3
nginx-0.0.7-2004-06-20-23:54:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
344
diff
changeset
|
146 do { |
473 | 147 size = cl->buf->file_last - cl->buf->file_pos; |
361
446782c909b3
nginx-0.0.7-2004-06-20-23:54:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
344
diff
changeset
|
148 |
446782c909b3
nginx-0.0.7-2004-06-20-23:54:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
344
diff
changeset
|
149 if (send + size > limit) { |
446782c909b3
nginx-0.0.7-2004-06-20-23:54:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
344
diff
changeset
|
150 size = limit - send; |
362
7650aea1816f
nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
151 |
7650aea1816f
nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
152 aligned = (cl->buf->file_pos + size + ngx_pagesize - 1) |
1182
df449f4a8032
fix sendfile on 64-bit Linux and limit_rate on all 64-bit platforms
Igor Sysoev <igor@sysoev.ru>
parents:
597
diff
changeset
|
153 & ~((off_t) ngx_pagesize - 1); |
362
7650aea1816f
nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
154 |
7650aea1816f
nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
155 if (aligned <= cl->buf->file_last) { |
7650aea1816f
nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
156 size = aligned - cl->buf->file_pos; |
7650aea1816f
nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
157 } |
152
fb48bf4fea1c
nginx-0.0.1-2003-10-21-11:47:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
158 } |
fb48bf4fea1c
nginx-0.0.1-2003-10-21-11:47:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
159 |
473 | 160 file_size += (size_t) size; |
361
446782c909b3
nginx-0.0.7-2004-06-20-23:54:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
344
diff
changeset
|
161 send += size; |
446782c909b3
nginx-0.0.7-2004-06-20-23:54:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
344
diff
changeset
|
162 fprev = cl->buf->file_pos + size; |
155
46eb23d9471d
nginx-0.0.1-2003-10-22-20:38:26 import
Igor Sysoev <igor@sysoev.ru>
parents:
154
diff
changeset
|
163 cl = cl->next; |
361
446782c909b3
nginx-0.0.7-2004-06-20-23:54:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
344
diff
changeset
|
164 |
446782c909b3
nginx-0.0.7-2004-06-20-23:54:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
344
diff
changeset
|
165 } while (cl |
446782c909b3
nginx-0.0.7-2004-06-20-23:54:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
344
diff
changeset
|
166 && cl->buf->in_file |
362
7650aea1816f
nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
167 && send < limit |
361
446782c909b3
nginx-0.0.7-2004-06-20-23:54:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
344
diff
changeset
|
168 && file->file->fd == cl->buf->file->fd |
446782c909b3
nginx-0.0.7-2004-06-20-23:54:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
344
diff
changeset
|
169 && fprev == cl->buf->file_pos); |
96
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
170 } |
63
36d2c25cc9bb
nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
171 |
455 | 172 |
264
cd009bf7400d
nginx-0.0.2-2004-02-19-19:48:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
262
diff
changeset
|
173 if (file) { |
455 | 174 |
4499
778ef9c3fd2d
Fixed spelling in single-line comments.
Ruslan Ermilov <ru@nginx.com>
parents:
4412
diff
changeset
|
175 /* create the trailer iovec and coalesce the neighbouring bufs */ |
142
cb77c084acdb
nginx-0.0.1-2003-10-09-11:00:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
103
diff
changeset
|
176 |
264
cd009bf7400d
nginx-0.0.2-2004-02-19-19:48:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
262
diff
changeset
|
177 prev = NULL; |
cd009bf7400d
nginx-0.0.2-2004-02-19-19:48:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
262
diff
changeset
|
178 iov = NULL; |
cd009bf7400d
nginx-0.0.2-2004-02-19-19:48:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
262
diff
changeset
|
179 |
4596
089cc5154c1e
IOV_MAX handling microoptimization.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4572
diff
changeset
|
180 while (cl && send < limit) { |
455 | 181 |
343
6bdf858bff8c
nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
Igor Sysoev <igor@sysoev.ru>
parents:
297
diff
changeset
|
182 if (ngx_buf_special(cl->buf)) { |
455 | 183 cl = cl->next; |
264
cd009bf7400d
nginx-0.0.2-2004-02-19-19:48:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
262
diff
changeset
|
184 continue; |
cd009bf7400d
nginx-0.0.2-2004-02-19-19:48:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
262
diff
changeset
|
185 } |
142
cb77c084acdb
nginx-0.0.1-2003-10-09-11:00:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
103
diff
changeset
|
186 |
343
6bdf858bff8c
nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
Igor Sysoev <igor@sysoev.ru>
parents:
297
diff
changeset
|
187 if (!ngx_buf_in_memory_only(cl->buf)) { |
264
cd009bf7400d
nginx-0.0.2-2004-02-19-19:48:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
262
diff
changeset
|
188 break; |
cd009bf7400d
nginx-0.0.2-2004-02-19-19:48:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
262
diff
changeset
|
189 } |
96
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
190 |
361
446782c909b3
nginx-0.0.7-2004-06-20-23:54:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
344
diff
changeset
|
191 size = cl->buf->last - cl->buf->pos; |
446782c909b3
nginx-0.0.7-2004-06-20-23:54:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
344
diff
changeset
|
192 |
446782c909b3
nginx-0.0.7-2004-06-20-23:54:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
344
diff
changeset
|
193 if (send + size > limit) { |
446782c909b3
nginx-0.0.7-2004-06-20-23:54:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
344
diff
changeset
|
194 size = limit - send; |
446782c909b3
nginx-0.0.7-2004-06-20-23:54:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
344
diff
changeset
|
195 } |
446782c909b3
nginx-0.0.7-2004-06-20-23:54:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
344
diff
changeset
|
196 |
343
6bdf858bff8c
nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
Igor Sysoev <igor@sysoev.ru>
parents:
297
diff
changeset
|
197 if (prev == cl->buf->pos) { |
473 | 198 iov->iov_len += (size_t) size; |
63
36d2c25cc9bb
nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
199 |
264
cd009bf7400d
nginx-0.0.2-2004-02-19-19:48:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
262
diff
changeset
|
200 } else { |
4596
089cc5154c1e
IOV_MAX handling microoptimization.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4572
diff
changeset
|
201 if (trailer.nelts >= IOV_MAX){ |
089cc5154c1e
IOV_MAX handling microoptimization.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4572
diff
changeset
|
202 break; |
089cc5154c1e
IOV_MAX handling microoptimization.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4572
diff
changeset
|
203 } |
089cc5154c1e
IOV_MAX handling microoptimization.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4572
diff
changeset
|
204 |
501 | 205 iov = ngx_array_push(&trailer); |
206 if (iov == NULL) { | |
428
5e73d0ea4dab
nginx-0.0.11-2004-09-16-20:10:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
402
diff
changeset
|
207 return NGX_CHAIN_ERROR; |
5e73d0ea4dab
nginx-0.0.11-2004-09-16-20:10:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
402
diff
changeset
|
208 } |
5e73d0ea4dab
nginx-0.0.11-2004-09-16-20:10:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
402
diff
changeset
|
209 |
343
6bdf858bff8c
nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
Igor Sysoev <igor@sysoev.ru>
parents:
297
diff
changeset
|
210 iov->iov_base = (void *) cl->buf->pos; |
473 | 211 iov->iov_len = (size_t) size; |
264
cd009bf7400d
nginx-0.0.2-2004-02-19-19:48:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
262
diff
changeset
|
212 } |
cd009bf7400d
nginx-0.0.2-2004-02-19-19:48:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
262
diff
changeset
|
213 |
473 | 214 prev = cl->buf->pos + (size_t) size; |
361
446782c909b3
nginx-0.0.7-2004-06-20-23:54:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
344
diff
changeset
|
215 send += size; |
455 | 216 cl = cl->next; |
96
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
217 } |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
218 } |
67
5a7d1aaa1618
nginx-0.0.1-2003-03-11-23:38:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
63
diff
changeset
|
219 |
96
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
220 if (file) { |
63
36d2c25cc9bb
nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
221 |
344
e366ba5db8f8
nginx-0.0.3-2004-06-01-10:04:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
343
diff
changeset
|
222 if (ngx_freebsd_use_tcp_nopush |
e366ba5db8f8
nginx-0.0.3-2004-06-01-10:04:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
343
diff
changeset
|
223 && c->tcp_nopush == NGX_TCP_NOPUSH_UNSET) |
e366ba5db8f8
nginx-0.0.3-2004-06-01-10:04:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
343
diff
changeset
|
224 { |
101
2e069b6e6920
nginx-0.0.1-2003-06-04-21:28:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
99
diff
changeset
|
225 if (ngx_tcp_nopush(c->fd) == NGX_ERROR) { |
5557
188481078faf
Use ngx_socket_errno where appropriate.
Piotr Sikora <piotr@cloudflare.com>
parents:
5320
diff
changeset
|
226 err = ngx_socket_errno; |
253
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
227 |
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
228 /* |
479 | 229 * there is a tiny chance to be interrupted, however, |
253
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
230 * we continue a processing without the TCP_NOPUSH |
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
231 */ |
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
232 |
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
233 if (err != NGX_EINTR) { |
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
234 wev->error = 1; |
537 | 235 (void) ngx_connection_error(c, err, |
236 ngx_tcp_nopush_n " failed"); | |
253
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
237 return NGX_CHAIN_ERROR; |
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
238 } |
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
239 |
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
240 } else { |
344
e366ba5db8f8
nginx-0.0.3-2004-06-01-10:04:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
343
diff
changeset
|
241 c->tcp_nopush = NGX_TCP_NOPUSH_SET; |
e366ba5db8f8
nginx-0.0.3-2004-06-01-10:04:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
343
diff
changeset
|
242 |
253
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
243 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, 0, |
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
244 "tcp_nopush"); |
96
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
245 } |
a23d010f356d
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246 } |
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247 |
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248 /* |
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249 * sendfile() does unneeded work if sf_hdtr's count is 0, |
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250 * but corresponding pointer is not NULL |
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251 */ |
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252 |
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253 hdtr.headers = header.nelts ? (struct iovec *) header.elts: NULL; |
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254 hdtr.hdr_cnt = header.nelts; |
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255 hdtr.trailers = trailer.nelts ? (struct iovec *) trailer.elts: NULL; |
96
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256 hdtr.trl_cnt = trailer.nelts; |
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257 |
153
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258 /* |
155
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259 * the "nbytes bug" of the old sendfile() syscall: |
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260 * http://bugs.freebsd.org/33771 |
153
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261 */ |
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262 |
479 | 263 if (!ngx_freebsd_sendfile_nbytes_bug) { |
473 | 264 header_size = 0; |
63
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265 } |
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266 |
203
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267 sent = 0; |
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268 |
3065 | 269 #if (NGX_HAVE_AIO_SENDFILE) |
270 flags = c->aio_sendfile ? SF_NODISKIO : 0; | |
271 #endif | |
272 | |
96
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273 rc = sendfile(file->file->fd, c->fd, file->file_pos, |
3065 | 274 file_size + header_size, &hdtr, &sent, flags); |
96
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275 |
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276 if (rc == -1) { |
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277 err = ngx_errno; |
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278 |
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279 switch (err) { |
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280 case NGX_EAGAIN: |
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281 eagain = 1; |
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282 break; |
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283 |
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284 case NGX_EINTR: |
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285 eintr = 1; |
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286 break; |
152
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287 |
3065 | 288 #if (NGX_HAVE_AIO_SENDFILE) |
289 case NGX_EBUSY: | |
290 c->busy_sendfile = file; | |
291 break; | |
292 #endif | |
293 | |
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294 default: |
170
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295 wev->error = 1; |
537 | 296 (void) ngx_connection_error(c, err, "sendfile() failed"); |
96
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297 return NGX_CHAIN_ERROR; |
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298 } |
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299 |
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300 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, err, |
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301 "sendfile() sent only %O bytes", sent); |
96
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302 |
483 | 303 /* |
304 * sendfile() in FreeBSD 3.x-4.x may return value >= 0 | |
305 * on success, although only 0 is documented | |
306 */ | |
307 | |
3080 | 308 } else if (rc >= 0 && sent == 0) { |
455 | 309 |
310 /* | |
483 | 311 * if rc is OK and sent equal to zero, then someone |
312 * has truncated the file, so the offset became beyond | |
313 * the end of the file | |
455 | 314 */ |
315 | |
316 ngx_log_error(NGX_LOG_ALERT, c->log, 0, | |
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317 "sendfile() reported that \"%s\" was truncated at %O", |
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318 file->file->name.data, file->file_pos); |
455 | 319 |
320 return NGX_CHAIN_ERROR; | |
321 } | |
322 | |
214
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323 ngx_log_debug4(NGX_LOG_DEBUG_EVENT, c->log, 0, |
461 | 324 "sendfile: %d, @%O %O:%uz", |
473 | 325 rc, file->file_pos, sent, file_size + header_size); |
96
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326 |
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327 } else { |
170
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328 rc = writev(c->fd, header.elts, header.nelts); |
96
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329 |
297
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330 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, |
473 | 331 "writev: %d of %uz", rc, header_size); |
297
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332 |
143
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333 if (rc == -1) { |
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334 err = ngx_errno; |
96
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335 |
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336 switch (err) { |
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337 case NGX_EAGAIN: |
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338 break; |
216
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339 |
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340 case NGX_EINTR: |
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341 eintr = 1; |
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342 break; |
96
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343 |
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344 default: |
170
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345 wev->error = 1; |
253
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346 ngx_connection_error(c, err, "writev() failed"); |
143
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347 return NGX_CHAIN_ERROR; |
96
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348 } |
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349 |
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350 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, |
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351 "writev() not ready"); |
143
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352 } |
89
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|
353 |
143
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354 sent = rc > 0 ? rc : 0; |
96
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355 } |
63
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|
356 |
96
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357 c->sent += sent; |
63
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358 |
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Moved the code for adjusting sent buffers in a separate function.
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359 in = ngx_handle_sent_chain(in, sent); |
96
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360 |
3065 | 361 #if (NGX_HAVE_AIO_SENDFILE) |
362 if (c->busy_sendfile) { | |
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363 return in; |
3065 | 364 } |
365 #endif | |
366 | |
152
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367 if (eagain) { |
155
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368 |
153
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369 /* |
479 | 370 * sendfile() may return EAGAIN, even if it has sent a whole file |
371 * part, it indicates that the successive sendfile() call would | |
253
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372 * return EAGAIN right away and would not send anything. |
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373 * We use it as a hint. |
153
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374 */ |
155
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375 |
170
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376 wev->ready = 0; |
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377 return in; |
362
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|
378 } |
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|
379 |
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361
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|
380 if (eintr) { |
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|
381 continue; |
152
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382 } |
96
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|
383 |
5851
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Removed the "complete" variable from various send chain functions.
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|
384 if (send - prev_send != sent) { |
362
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|
385 wev->ready = 0; |
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386 return in; |
362
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387 } |
152
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388 |
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4596
diff
changeset
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389 if (send >= limit || in == NULL) { |
ad137a80919f
Don't lose pointer to first nonempty buf in ngx_*_sendfile_chain().
Gleb Smirnoff <glebius@nginx.com>
parents:
4596
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390 return in; |
362
7650aea1816f
nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
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391 } |
142
cb77c084acdb
nginx-0.0.1-2003-10-09-11:00:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
103
diff
changeset
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392 } |
63
36d2c25cc9bb
nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
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393 } |