Mercurial > hg > nginx-quic
annotate src/os/unix/ngx_freebsd_sendfile_chain.c @ 5564:7e38aafc0342 stable-1.4
Year 2014.
author | Valentin Bartenev <vbart@nginx.com> |
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date | Tue, 14 Jan 2014 16:24:02 +0400 |
parents | 089cc5154c1e |
children | ad137a80919f |
rev | line source |
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nginx-0.0.2-2004-03-01-00:03:02 import
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1 |
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2 /* |
444
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nginx-0.1.0-2004-09-29-20:00:49 import; remove years from copyright
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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 |
63
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7 |
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nginx-0.0.1-2003-02-26-23:21:43 import
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8 #include <ngx_config.h> |
96
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9 #include <ngx_core.h> |
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10 #include <ngx_event.h> |
63
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11 |
96
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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() |
361
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17 * may send the partially filled packets, i.e. the 8 file pages may be sent |
290
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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. |
142
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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 | |
143
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28 * for non-keepalive HTTP connections. |
142
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29 */ |
63
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30 |
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nginx-0.0.1-2003-02-26-23:21:43 import
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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; |
290
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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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nginx-0.0.7-2004-06-21-19:59:32 import
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48 ngx_uint_t eintr, eagain, complete; |
63
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nginx-0.0.1-2003-02-26-23:21:43 import
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49 ngx_err_t err; |
343
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50 ngx_buf_t *file; |
63
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nginx-0.0.1-2003-02-26-23:21:43 import
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51 ngx_array_t header, trailer; |
170
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nginx-0.0.1-2003-11-03-01:56:18 import
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52 ngx_event_t *wev; |
362
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53 ngx_chain_t *cl; |
428
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nginx-0.0.11-2004-09-16-20:10:13 import
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54 struct sf_hdtr hdtr; |
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nginx-0.0.11-2004-09-16-20:10:13 import
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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) { |
144
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nginx-0.0.1-2003-10-12-20:49:16 import
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60 return in; |
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nginx-0.0.1-2003-10-12-20:49:16 import
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61 } |
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62 |
469 | 63 #if (NGX_HAVE_KQUEUE) |
170
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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; |
96
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101 |
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102 header.nelts = 0; |
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103 trailer.nelts = 0; |
96
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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; |
142
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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 } |
142
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119 |
361
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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
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128 |
143
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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
nginx-0.0.3-2004-06-01-10:04:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
343
diff
changeset
|
250 |
253
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
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; |
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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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|
354 ngx_connection_error(c, err, "writev() failed"); |
143
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355 return NGX_CHAIN_ERROR; |
96
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|
356 } |
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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
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360 } |
89
29bf798b583f
nginx-0.0.1-2003-05-15-19:42:53 import
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parents:
88
diff
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|
361 |
143
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362 sent = rc > 0 ? rc : 0; |
96
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|
363 } |
63
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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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|
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; |
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|
375 } |
63
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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
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|
379 } |
36d2c25cc9bb
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diff
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|
380 |
343
6bdf858bff8c
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diff
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|
381 size = ngx_buf_size(cl->buf); |
152
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|
382 |
96
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|
383 if (sent >= size) { |
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|
384 sent -= size; |
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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
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|
387 cl->buf->pos = cl->buf->last; |
96
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|
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 } |