Mercurial > hg > nginx-quic
annotate src/os/unix/ngx_freebsd_sendfile_chain.c @ 5110:0bbdd966a383
Request body: next upstream fix.
After introduction of chunked request body handling in 1.3.9 (r4931),
r->request_body->bufs buffers have b->start pointing to original buffer
start (and b->pos pointing to real data of this particular buffer).
While this is ok as per se, it caused bad things (usually original request
headers included before the request body) after reinit of the request
chain in ngx_http_upstream_reinit() while sending the request to a next
upstream server (which used to do b->pos = b->start for each buffer
in the request chain).
Patch by Piotr Sikora.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Thu, 14 Mar 2013 12:28:53 +0000 |
parents | 089cc5154c1e |
children | ad137a80919f |
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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Replaced "can not" with "cannot" and "could not" in a bunch of places.
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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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Fixed spelling in multiline C comments.
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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 | |
143
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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 |
597 | 32 #if (IOV_MAX > 64) |
33 #define NGX_HEADERS 64 | |
34 #define NGX_TRAILERS 64 | |
35 #else | |
36 #define NGX_HEADERS IOV_MAX | |
37 #define NGX_TRAILERS IOV_MAX | |
38 #endif | |
428
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39 |
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40 |
501 | 41 ngx_chain_t * |
42 ngx_freebsd_sendfile_chain(ngx_connection_t *c, ngx_chain_t *in, off_t limit) | |
63
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43 { |
3065 | 44 int rc, flags; |
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45 u_char *prev; |
473 | 46 off_t size, send, prev_send, aligned, sent, fprev; |
47 size_t header_size, file_size; | |
362
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48 ngx_uint_t eintr, eagain, complete; |
63
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49 ngx_err_t err; |
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50 ngx_buf_t *file; |
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51 ngx_array_t header, trailer; |
170
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52 ngx_event_t *wev; |
362
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53 ngx_chain_t *cl; |
428
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54 struct sf_hdtr hdtr; |
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55 struct iovec *iov, headers[NGX_HEADERS], trailers[NGX_TRAILERS]; |
96
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56 |
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57 wev = c->write; |
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58 |
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59 if (!wev->ready) { |
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60 return in; |
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61 } |
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62 |
469 | 63 #if (NGX_HAVE_KQUEUE) |
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64 |
587 | 65 if ((ngx_event_flags & NGX_USE_KQUEUE_EVENT) && wev->pending_eof) { |
537 | 66 (void) ngx_connection_error(c, wev->kq_errno, |
67 "kevent() reported about an closed connection"); | |
170
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68 wev->error = 1; |
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69 return NGX_CHAIN_ERROR; |
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70 } |
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71 |
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72 #endif |
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73 |
473 | 74 /* the maximum limit size is the maximum size_t value - the page size */ |
75 | |
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76 if (limit == 0 || limit > (off_t) (NGX_MAX_SIZE_T_VALUE - ngx_pagesize)) { |
477 | 77 limit = NGX_MAX_SIZE_T_VALUE - ngx_pagesize; |
473 | 78 } |
79 | |
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80 send = 0; |
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81 eagain = 0; |
3065 | 82 flags = 0; |
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83 |
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84 header.elts = headers; |
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85 header.size = sizeof(struct iovec); |
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86 header.nalloc = NGX_HEADERS; |
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87 header.pool = c->pool; |
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88 |
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89 trailer.elts = trailers; |
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90 trailer.size = sizeof(struct iovec); |
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91 trailer.nalloc = NGX_TRAILERS; |
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92 trailer.pool = c->pool; |
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93 |
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94 for ( ;; ) { |
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95 file = NULL; |
473 | 96 file_size = 0; |
97 header_size = 0; | |
96
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98 eintr = 0; |
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99 complete = 0; |
473 | 100 prev_send = send; |
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101 |
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102 header.nelts = 0; |
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103 trailer.nelts = 0; |
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104 |
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105 /* create the header iovec and coalesce the neighbouring bufs */ |
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106 |
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107 prev = NULL; |
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108 iov = NULL; |
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109 |
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110 for (cl = in; cl && send < limit; cl = cl->next) { |
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111 |
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112 if (ngx_buf_special(cl->buf)) { |
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113 continue; |
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114 } |
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115 |
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116 if (!ngx_buf_in_memory_only(cl->buf)) { |
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117 break; |
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118 } |
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119 |
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120 size = cl->buf->last - cl->buf->pos; |
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121 |
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122 if (send + size > limit) { |
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123 size = limit - send; |
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124 } |
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125 |
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126 if (prev == cl->buf->pos) { |
473 | 127 iov->iov_len += (size_t) size; |
96
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
128 |
143
5526213be452
nginx-0.0.1-2003-10-10-19:10:50 import
Igor Sysoev <igor@sysoev.ru>
parents:
142
diff
changeset
|
129 } else { |
4596
089cc5154c1e
IOV_MAX handling microoptimization.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4572
diff
changeset
|
130 if (header.nelts >= IOV_MAX){ |
089cc5154c1e
IOV_MAX handling microoptimization.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4572
diff
changeset
|
131 break; |
089cc5154c1e
IOV_MAX handling microoptimization.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4572
diff
changeset
|
132 } |
089cc5154c1e
IOV_MAX handling microoptimization.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4572
diff
changeset
|
133 |
501 | 134 iov = ngx_array_push(&header); |
135 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
|
136 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
|
137 } |
5e73d0ea4dab
nginx-0.0.11-2004-09-16-20:10:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
402
diff
changeset
|
138 |
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
|
139 iov->iov_base = (void *) cl->buf->pos; |
473 | 140 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
|
141 } |
63
36d2c25cc9bb
nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
142 |
473 | 143 prev = cl->buf->pos + (size_t) size; |
144 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
|
145 send += size; |
96
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
146 } |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
147 |
142
cb77c084acdb
nginx-0.0.1-2003-10-09-11:00:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
103
diff
changeset
|
148 |
362
7650aea1816f
nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
149 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
|
150 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
|
151 |
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
|
152 /* 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
|
153 |
361
446782c909b3
nginx-0.0.7-2004-06-20-23:54:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
344
diff
changeset
|
154 do { |
473 | 155 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
|
156 |
446782c909b3
nginx-0.0.7-2004-06-20-23:54:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
344
diff
changeset
|
157 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
|
158 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
|
159 |
7650aea1816f
nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
160 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
|
161 & ~((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
|
162 |
7650aea1816f
nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
163 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
|
164 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
|
165 } |
152
fb48bf4fea1c
nginx-0.0.1-2003-10-21-11:47:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
166 } |
fb48bf4fea1c
nginx-0.0.1-2003-10-21-11:47:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
167 |
473 | 168 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
|
169 send += size; |
446782c909b3
nginx-0.0.7-2004-06-20-23:54:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
344
diff
changeset
|
170 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
|
171 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
|
172 |
446782c909b3
nginx-0.0.7-2004-06-20-23:54:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
344
diff
changeset
|
173 } while (cl |
446782c909b3
nginx-0.0.7-2004-06-20-23:54:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
344
diff
changeset
|
174 && 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
|
175 && send < limit |
361
446782c909b3
nginx-0.0.7-2004-06-20-23:54:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
344
diff
changeset
|
176 && 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
|
177 && 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
|
178 } |
63
36d2c25cc9bb
nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
179 |
455 | 180 |
264
cd009bf7400d
nginx-0.0.2-2004-02-19-19:48:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
262
diff
changeset
|
181 if (file) { |
455 | 182 |
4499
778ef9c3fd2d
Fixed spelling in single-line comments.
Ruslan Ermilov <ru@nginx.com>
parents:
4412
diff
changeset
|
183 /* 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
|
184 |
264
cd009bf7400d
nginx-0.0.2-2004-02-19-19:48:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
262
diff
changeset
|
185 prev = NULL; |
cd009bf7400d
nginx-0.0.2-2004-02-19-19:48:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
262
diff
changeset
|
186 iov = NULL; |
cd009bf7400d
nginx-0.0.2-2004-02-19-19:48:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
262
diff
changeset
|
187 |
4596
089cc5154c1e
IOV_MAX handling microoptimization.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4572
diff
changeset
|
188 while (cl && send < limit) { |
455 | 189 |
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
|
190 if (ngx_buf_special(cl->buf)) { |
455 | 191 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
|
192 continue; |
cd009bf7400d
nginx-0.0.2-2004-02-19-19:48:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
262
diff
changeset
|
193 } |
142
cb77c084acdb
nginx-0.0.1-2003-10-09-11:00:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
103
diff
changeset
|
194 |
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
|
195 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
|
196 break; |
cd009bf7400d
nginx-0.0.2-2004-02-19-19:48:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
262
diff
changeset
|
197 } |
96
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
198 |
361
446782c909b3
nginx-0.0.7-2004-06-20-23:54:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
344
diff
changeset
|
199 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
|
200 |
446782c909b3
nginx-0.0.7-2004-06-20-23:54:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
344
diff
changeset
|
201 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
|
202 size = limit - send; |
446782c909b3
nginx-0.0.7-2004-06-20-23:54:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
344
diff
changeset
|
203 } |
446782c909b3
nginx-0.0.7-2004-06-20-23:54:15 import
Igor Sysoev <igor@sysoev.ru>
parents:
344
diff
changeset
|
204 |
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
|
205 if (prev == cl->buf->pos) { |
473 | 206 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
|
207 |
264
cd009bf7400d
nginx-0.0.2-2004-02-19-19:48:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
262
diff
changeset
|
208 } else { |
4596
089cc5154c1e
IOV_MAX handling microoptimization.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4572
diff
changeset
|
209 if (trailer.nelts >= IOV_MAX){ |
089cc5154c1e
IOV_MAX handling microoptimization.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4572
diff
changeset
|
210 break; |
089cc5154c1e
IOV_MAX handling microoptimization.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4572
diff
changeset
|
211 } |
089cc5154c1e
IOV_MAX handling microoptimization.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4572
diff
changeset
|
212 |
501 | 213 iov = ngx_array_push(&trailer); |
214 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
|
215 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
|
216 } |
5e73d0ea4dab
nginx-0.0.11-2004-09-16-20:10:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
402
diff
changeset
|
217 |
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
|
218 iov->iov_base = (void *) cl->buf->pos; |
473 | 219 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
|
220 } |
cd009bf7400d
nginx-0.0.2-2004-02-19-19:48:14 import
Igor Sysoev <igor@sysoev.ru>
parents:
262
diff
changeset
|
221 |
473 | 222 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
|
223 send += size; |
455 | 224 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
|
225 } |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
226 } |
67
5a7d1aaa1618
nginx-0.0.1-2003-03-11-23:38:13 import
Igor Sysoev <igor@sysoev.ru>
parents:
63
diff
changeset
|
227 |
96
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
228 if (file) { |
63
36d2c25cc9bb
nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
229 |
344
e366ba5db8f8
nginx-0.0.3-2004-06-01-10:04:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
343
diff
changeset
|
230 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
|
231 && 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
|
232 { |
101
2e069b6e6920
nginx-0.0.1-2003-06-04-21:28:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
99
diff
changeset
|
233 if (ngx_tcp_nopush(c->fd) == NGX_ERROR) { |
253
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
234 err = ngx_errno; |
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
235 |
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
236 /* |
479 | 237 * 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
|
238 * 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
|
239 */ |
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
240 |
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
241 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
|
242 wev->error = 1; |
537 | 243 (void) ngx_connection_error(c, err, |
244 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
|
245 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
|
246 } |
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
247 |
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
248 } else { |
344
e366ba5db8f8
nginx-0.0.3-2004-06-01-10:04:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
343
diff
changeset
|
249 c->tcp_nopush = NGX_TCP_NOPUSH_SET; |
e366ba5db8f8
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250 |
253
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251 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, 0, |
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252 "tcp_nopush"); |
96
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253 } |
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254 } |
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255 |
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256 /* |
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257 * sendfile() does unneeded work if sf_hdtr's count is 0, |
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258 * but corresponding pointer is not NULL |
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259 */ |
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260 |
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261 hdtr.headers = header.nelts ? (struct iovec *) header.elts: NULL; |
96
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262 hdtr.hdr_cnt = header.nelts; |
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263 hdtr.trailers = trailer.nelts ? (struct iovec *) trailer.elts: NULL; |
96
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264 hdtr.trl_cnt = trailer.nelts; |
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265 |
153
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266 /* |
155
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267 * the "nbytes bug" of the old sendfile() syscall: |
153
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268 * http://www.freebsd.org/cgi/query-pr.cgi?pr=33771 |
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269 */ |
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270 |
479 | 271 if (!ngx_freebsd_sendfile_nbytes_bug) { |
473 | 272 header_size = 0; |
63
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273 } |
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274 |
203
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275 sent = 0; |
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276 |
3065 | 277 #if (NGX_HAVE_AIO_SENDFILE) |
278 flags = c->aio_sendfile ? SF_NODISKIO : 0; | |
279 #endif | |
280 | |
96
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281 rc = sendfile(file->file->fd, c->fd, file->file_pos, |
3065 | 282 file_size + header_size, &hdtr, &sent, flags); |
96
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283 |
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284 if (rc == -1) { |
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285 err = ngx_errno; |
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286 |
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287 switch (err) { |
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288 case NGX_EAGAIN: |
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289 eagain = 1; |
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290 break; |
216
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291 |
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292 case NGX_EINTR: |
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293 eintr = 1; |
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294 break; |
152
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295 |
3065 | 296 #if (NGX_HAVE_AIO_SENDFILE) |
297 case NGX_EBUSY: | |
298 c->busy_sendfile = file; | |
299 break; | |
300 #endif | |
301 | |
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302 default: |
170
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303 wev->error = 1; |
537 | 304 (void) ngx_connection_error(c, err, "sendfile() failed"); |
96
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305 return NGX_CHAIN_ERROR; |
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306 } |
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307 |
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308 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, err, |
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309 "sendfile() sent only %O bytes", sent); |
96
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310 |
483 | 311 /* |
312 * sendfile() in FreeBSD 3.x-4.x may return value >= 0 | |
313 * on success, although only 0 is documented | |
314 */ | |
315 | |
3080 | 316 } else if (rc >= 0 && sent == 0) { |
455 | 317 |
318 /* | |
483 | 319 * if rc is OK and sent equal to zero, then someone |
320 * has truncated the file, so the offset became beyond | |
321 * the end of the file | |
455 | 322 */ |
323 | |
324 ngx_log_error(NGX_LOG_ALERT, c->log, 0, | |
3081
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325 "sendfile() reported that \"%s\" was truncated at %O", |
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326 file->file->name.data, file->file_pos); |
455 | 327 |
328 return NGX_CHAIN_ERROR; | |
329 } | |
330 | |
214
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331 ngx_log_debug4(NGX_LOG_DEBUG_EVENT, c->log, 0, |
461 | 332 "sendfile: %d, @%O %O:%uz", |
473 | 333 rc, file->file_pos, sent, file_size + header_size); |
96
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334 |
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335 } else { |
170
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336 rc = writev(c->fd, header.elts, header.nelts); |
96
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337 |
297
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|
338 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0, |
473 | 339 "writev: %d of %uz", rc, header_size); |
297
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340 |
143
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341 if (rc == -1) { |
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342 err = ngx_errno; |
96
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343 |
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344 switch (err) { |
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345 case NGX_EAGAIN: |
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346 break; |
216
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347 |
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348 case NGX_EINTR: |
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349 eintr = 1; |
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350 break; |
96
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351 |
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352 default: |
170
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353 wev->error = 1; |
253
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diff
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|
354 ngx_connection_error(c, err, "writev() failed"); |
143
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355 return NGX_CHAIN_ERROR; |
96
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|
356 } |
3063
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357 |
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358 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, |
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359 "writev() not ready"); |
143
5526213be452
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360 } |
89
29bf798b583f
nginx-0.0.1-2003-05-15-19:42:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
88
diff
changeset
|
361 |
143
5526213be452
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|
362 sent = rc > 0 ? rc : 0; |
96
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|
363 } |
63
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diff
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|
364 |
473 | 365 if (send - prev_send == sent) { |
362
7650aea1816f
nginx-0.0.7-2004-06-21-19:59:32 import
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parents:
361
diff
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|
366 complete = 1; |
361
446782c909b3
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344
diff
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|
367 } |
446782c909b3
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344
diff
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|
368 |
96
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|
369 c->sent += sent; |
63
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|
370 |
155
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|
371 for (cl = in; cl; cl = cl->next) { |
152
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144
diff
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|
372 |
343
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diff
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|
373 if (ngx_buf_special(cl->buf)) { |
152
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|
374 continue; |
fb48bf4fea1c
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|
375 } |
63
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diff
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|
376 |
152
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|
377 if (sent == 0) { |
fb48bf4fea1c
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144
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|
378 break; |
63
36d2c25cc9bb
nginx-0.0.1-2003-02-26-23:21:43 import
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diff
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|
379 } |
36d2c25cc9bb
nginx-0.0.1-2003-02-26-23:21:43 import
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parents:
diff
changeset
|
380 |
343
6bdf858bff8c
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diff
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|
381 size = ngx_buf_size(cl->buf); |
152
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diff
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|
382 |
96
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diff
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|
383 if (sent >= size) { |
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|
384 sent -= size; |
a23d010f356d
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diff
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|
385 |
343
6bdf858bff8c
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diff
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|
386 if (ngx_buf_in_memory(cl->buf)) { |
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
|
387 cl->buf->pos = cl->buf->last; |
96
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
388 } |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
389 |
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
|
390 if (cl->buf->in_file) { |
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
|
391 cl->buf->file_pos = cl->buf->file_last; |
96
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
392 } |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
393 |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
394 continue; |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
395 } |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
396 |
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
|
397 if (ngx_buf_in_memory(cl->buf)) { |
473 | 398 cl->buf->pos += (size_t) sent; |
96
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
399 } |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
400 |
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
|
401 if (cl->buf->in_file) { |
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
|
402 cl->buf->file_pos += sent; |
96
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
403 } |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
404 |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
405 break; |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
406 } |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
407 |
3065 | 408 #if (NGX_HAVE_AIO_SENDFILE) |
409 if (c->busy_sendfile) { | |
410 return cl; | |
411 } | |
412 #endif | |
413 | |
152
fb48bf4fea1c
nginx-0.0.1-2003-10-21-11:47:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
414 if (eagain) { |
155
46eb23d9471d
nginx-0.0.1-2003-10-22-20:38:26 import
Igor Sysoev <igor@sysoev.ru>
parents:
154
diff
changeset
|
415 |
153
c71aeb75c071
nginx-0.0.1-2003-10-21-20:49:56 import
Igor Sysoev <igor@sysoev.ru>
parents:
152
diff
changeset
|
416 /* |
479 | 417 * sendfile() may return EAGAIN, even if it has sent a whole file |
418 * part, it indicates that the successive sendfile() call would | |
253
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
419 * return EAGAIN right away and would not send anything. |
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
420 * We use it as a hint. |
153
c71aeb75c071
nginx-0.0.1-2003-10-21-20:49:56 import
Igor Sysoev <igor@sysoev.ru>
parents:
152
diff
changeset
|
421 */ |
155
46eb23d9471d
nginx-0.0.1-2003-10-22-20:38:26 import
Igor Sysoev <igor@sysoev.ru>
parents:
154
diff
changeset
|
422 |
170
c42be4185301
nginx-0.0.1-2003-11-03-01:56:18 import
Igor Sysoev <igor@sysoev.ru>
parents:
163
diff
changeset
|
423 wev->ready = 0; |
362
7650aea1816f
nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
424 return cl; |
7650aea1816f
nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
425 } |
7650aea1816f
nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
426 |
7650aea1816f
nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
427 if (eintr) { |
7650aea1816f
nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
428 continue; |
152
fb48bf4fea1c
nginx-0.0.1-2003-10-21-11:47:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
429 } |
96
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
430 |
362
7650aea1816f
nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
431 if (!complete) { |
7650aea1816f
nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
432 wev->ready = 0; |
7650aea1816f
nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
433 return cl; |
7650aea1816f
nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
434 } |
152
fb48bf4fea1c
nginx-0.0.1-2003-10-21-11:47:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
435 |
362
7650aea1816f
nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
436 if (send >= limit || cl == NULL) { |
7650aea1816f
nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
437 return cl; |
7650aea1816f
nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
438 } |
7650aea1816f
nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
439 |
7650aea1816f
nginx-0.0.7-2004-06-21-19:59:32 import
Igor Sysoev <igor@sysoev.ru>
parents:
361
diff
changeset
|
440 in = cl; |
142
cb77c084acdb
nginx-0.0.1-2003-10-09-11:00:45 import
Igor Sysoev <igor@sysoev.ru>
parents:
103
diff
changeset
|
441 } |
63
36d2c25cc9bb
nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
442 } |