Mercurial > hg > nginx-quic
annotate src/os/unix/ngx_freebsd_sendfile_chain.c @ 6230:2a621245f4cf
Win32: MSVC 2015 compatibility.
Resolved warnings about declarations that hide previous local declarations.
Warnings about WSASocketA() being deprecated resolved by explicit use of
WSASocketW() instead of WSASocket(). When compiling without IPv6 support,
WinSock deprecated warnings are disabled to allow use of gethostbyname().
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Mon, 17 Aug 2015 18:09:17 +0300 |
parents | 657f6ec01da0 |
children | 768e287a6f36 |
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> |
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 |
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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 |
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. |
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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. |
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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 { |
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35 int rc, flags; |
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36 off_t send, prev_send, sent; |
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37 size_t file_size; |
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38 ssize_t n; |
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39 ngx_uint_t eintr, eagain; |
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40 ngx_err_t err; |
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41 ngx_buf_t *file; |
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42 ngx_event_t *wev; |
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43 ngx_chain_t *cl; |
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44 ngx_iovec_t header, trailer; |
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45 struct sf_hdtr hdtr; |
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46 struct iovec headers[NGX_IOVS_PREALLOCATE]; |
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47 struct iovec trailers[NGX_IOVS_PREALLOCATE]; |
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48 #if (NGX_HAVE_AIO_SENDFILE) |
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49 ngx_uint_t ebusy; |
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50 ngx_event_aio_t *aio; |
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51 #endif |
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52 |
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53 wev = c->write; |
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54 |
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55 if (!wev->ready) { |
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56 return in; |
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57 } |
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58 |
469 | 59 #if (NGX_HAVE_KQUEUE) |
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60 |
587 | 61 if ((ngx_event_flags & NGX_USE_KQUEUE_EVENT) && wev->pending_eof) { |
537 | 62 (void) ngx_connection_error(c, wev->kq_errno, |
63 "kevent() reported about an closed connection"); | |
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64 wev->error = 1; |
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65 return NGX_CHAIN_ERROR; |
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66 } |
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67 |
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68 #endif |
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69 |
473 | 70 /* the maximum limit size is the maximum size_t value - the page size */ |
71 | |
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72 if (limit == 0 || limit > (off_t) (NGX_MAX_SIZE_T_VALUE - ngx_pagesize)) { |
477 | 73 limit = NGX_MAX_SIZE_T_VALUE - ngx_pagesize; |
473 | 74 } |
75 | |
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76 send = 0; |
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77 eagain = 0; |
3065 | 78 flags = 0; |
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79 |
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80 #if (NGX_HAVE_AIO_SENDFILE && NGX_SUPPRESS_WARN) |
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81 aio = NULL; |
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82 file = NULL; |
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83 #endif |
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84 |
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85 header.iovs = headers; |
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86 header.nalloc = NGX_IOVS_PREALLOCATE; |
428
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87 |
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88 trailer.iovs = trailers; |
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89 trailer.nalloc = NGX_IOVS_PREALLOCATE; |
428
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90 |
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91 for ( ;; ) { |
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92 eintr = 0; |
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93 #if (NGX_HAVE_AIO_SENDFILE) |
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94 ebusy = 0; |
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95 #endif |
473 | 96 prev_send = send; |
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97 |
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98 /* create the header iovec and coalesce the neighbouring bufs */ |
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99 |
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100 cl = ngx_output_chain_to_iovec(&header, in, limit - send, c->log); |
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101 |
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102 if (cl == NGX_CHAIN_ERROR) { |
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103 return NGX_CHAIN_ERROR; |
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104 } |
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105 |
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106 send += header.size; |
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107 |
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108 if (cl && cl->buf->in_file && send < limit) { |
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109 file = cl->buf; |
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110 |
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111 /* coalesce the neighbouring file bufs */ |
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112 |
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113 file_size = (size_t) ngx_chain_coalesce_file(&cl, limit - send); |
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114 |
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115 send += file_size; |
455 | 116 |
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117 /* create the trailer iovec and coalesce the neighbouring bufs */ |
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118 |
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119 cl = ngx_output_chain_to_iovec(&trailer, cl, limit - send, c->log); |
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120 |
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121 if (cl == NGX_CHAIN_ERROR) { |
8e903522c17a
Introduced the ngx_output_chain_to_iovec() function.
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parents:
5912
diff
changeset
|
122 return NGX_CHAIN_ERROR; |
8e903522c17a
Introduced the ngx_output_chain_to_iovec() function.
Valentin Bartenev <vbart@nginx.com>
parents:
5912
diff
changeset
|
123 } |
4596
089cc5154c1e
IOV_MAX handling microoptimization.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4572
diff
changeset
|
124 |
5913
8e903522c17a
Introduced the ngx_output_chain_to_iovec() function.
Valentin Bartenev <vbart@nginx.com>
parents:
5912
diff
changeset
|
125 send += trailer.size; |
63
36d2c25cc9bb
nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
126 |
344
e366ba5db8f8
nginx-0.0.3-2004-06-01-10:04:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
343
diff
changeset
|
127 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
|
128 && 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
|
129 { |
101
2e069b6e6920
nginx-0.0.1-2003-06-04-21:28:33 import
Igor Sysoev <igor@sysoev.ru>
parents:
99
diff
changeset
|
130 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
|
131 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
|
132 |
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
133 /* |
479 | 134 * 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
|
135 * 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
|
136 */ |
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
137 |
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
138 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
|
139 wev->error = 1; |
537 | 140 (void) ngx_connection_error(c, err, |
141 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
|
142 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
|
143 } |
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
144 |
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
145 } else { |
344
e366ba5db8f8
nginx-0.0.3-2004-06-01-10:04:46 import
Igor Sysoev <igor@sysoev.ru>
parents:
343
diff
changeset
|
146 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
|
147 |
253
b6793bc5034b
nginx-0.0.2-2004-02-09-10:46:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
218
diff
changeset
|
148 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
|
149 "tcp_nopush"); |
96
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
150 } |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
151 } |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
152 |
4335
1003326eccc5
Microoptimization of sendfile(2) usage under FreeBSD.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4133
diff
changeset
|
153 /* |
1003326eccc5
Microoptimization of sendfile(2) usage under FreeBSD.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4133
diff
changeset
|
154 * sendfile() does unneeded work if sf_hdtr's count is 0, |
1003326eccc5
Microoptimization of sendfile(2) usage under FreeBSD.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4133
diff
changeset
|
155 * but corresponding pointer is not NULL |
1003326eccc5
Microoptimization of sendfile(2) usage under FreeBSD.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4133
diff
changeset
|
156 */ |
1003326eccc5
Microoptimization of sendfile(2) usage under FreeBSD.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4133
diff
changeset
|
157 |
5913
8e903522c17a
Introduced the ngx_output_chain_to_iovec() function.
Valentin Bartenev <vbart@nginx.com>
parents:
5912
diff
changeset
|
158 hdtr.headers = header.count ? header.iovs : NULL; |
8e903522c17a
Introduced the ngx_output_chain_to_iovec() function.
Valentin Bartenev <vbart@nginx.com>
parents:
5912
diff
changeset
|
159 hdtr.hdr_cnt = header.count; |
8e903522c17a
Introduced the ngx_output_chain_to_iovec() function.
Valentin Bartenev <vbart@nginx.com>
parents:
5912
diff
changeset
|
160 hdtr.trailers = trailer.count ? trailer.iovs : NULL; |
8e903522c17a
Introduced the ngx_output_chain_to_iovec() function.
Valentin Bartenev <vbart@nginx.com>
parents:
5912
diff
changeset
|
161 hdtr.trl_cnt = trailer.count; |
96
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
162 |
153
c71aeb75c071
nginx-0.0.1-2003-10-21-20:49:56 import
Igor Sysoev <igor@sysoev.ru>
parents:
152
diff
changeset
|
163 /* |
155
46eb23d9471d
nginx-0.0.1-2003-10-22-20:38:26 import
Igor Sysoev <igor@sysoev.ru>
parents:
154
diff
changeset
|
164 * the "nbytes bug" of the old sendfile() syscall: |
5727
675bda8dcfdb
FreeBSD has migrated to Bugzilla.
Sergey Kandaurov <pluknet@nginx.com>
parents:
5557
diff
changeset
|
165 * http://bugs.freebsd.org/33771 |
153
c71aeb75c071
nginx-0.0.1-2003-10-21-20:49:56 import
Igor Sysoev <igor@sysoev.ru>
parents:
152
diff
changeset
|
166 */ |
c71aeb75c071
nginx-0.0.1-2003-10-21-20:49:56 import
Igor Sysoev <igor@sysoev.ru>
parents:
152
diff
changeset
|
167 |
479 | 168 if (!ngx_freebsd_sendfile_nbytes_bug) { |
5913
8e903522c17a
Introduced the ngx_output_chain_to_iovec() function.
Valentin Bartenev <vbart@nginx.com>
parents:
5912
diff
changeset
|
169 header.size = 0; |
63
36d2c25cc9bb
nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
170 } |
36d2c25cc9bb
nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
171 |
203
c9da5900c79e
nginx-0.0.1-2003-12-02-08:47:29 import
Igor Sysoev <igor@sysoev.ru>
parents:
201
diff
changeset
|
172 sent = 0; |
c9da5900c79e
nginx-0.0.1-2003-12-02-08:47:29 import
Igor Sysoev <igor@sysoev.ru>
parents:
201
diff
changeset
|
173 |
3065 | 174 #if (NGX_HAVE_AIO_SENDFILE) |
5980
ccad84a174e0
Refactored sendfile() AIO preload.
Valentin Bartenev <vbart@nginx.com>
parents:
5917
diff
changeset
|
175 aio = file->file->aio; |
ccad84a174e0
Refactored sendfile() AIO preload.
Valentin Bartenev <vbart@nginx.com>
parents:
5917
diff
changeset
|
176 flags = (aio && aio->preload_handler) ? SF_NODISKIO : 0; |
3065 | 177 #endif |
178 | |
96
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
179 rc = sendfile(file->file->fd, c->fd, file->file_pos, |
5913
8e903522c17a
Introduced the ngx_output_chain_to_iovec() function.
Valentin Bartenev <vbart@nginx.com>
parents:
5912
diff
changeset
|
180 file_size + header.size, &hdtr, &sent, flags); |
96
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
181 |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
182 if (rc == -1) { |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
183 err = ngx_errno; |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
184 |
3063
6f6d7ea70805
refactor EAGAIN/EINTR processing
Igor Sysoev <igor@sysoev.ru>
parents:
1354
diff
changeset
|
185 switch (err) { |
6f6d7ea70805
refactor EAGAIN/EINTR processing
Igor Sysoev <igor@sysoev.ru>
parents:
1354
diff
changeset
|
186 case NGX_EAGAIN: |
6f6d7ea70805
refactor EAGAIN/EINTR processing
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parents:
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diff
changeset
|
187 eagain = 1; |
6f6d7ea70805
refactor EAGAIN/EINTR processing
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parents:
1354
diff
changeset
|
188 break; |
216
f1d0e5f09c1e
nginx-0.0.1-2003-12-25-23:26:58 import
Igor Sysoev <igor@sysoev.ru>
parents:
214
diff
changeset
|
189 |
3063
6f6d7ea70805
refactor EAGAIN/EINTR processing
Igor Sysoev <igor@sysoev.ru>
parents:
1354
diff
changeset
|
190 case NGX_EINTR: |
6f6d7ea70805
refactor EAGAIN/EINTR processing
Igor Sysoev <igor@sysoev.ru>
parents:
1354
diff
changeset
|
191 eintr = 1; |
6f6d7ea70805
refactor EAGAIN/EINTR processing
Igor Sysoev <igor@sysoev.ru>
parents:
1354
diff
changeset
|
192 break; |
152
fb48bf4fea1c
nginx-0.0.1-2003-10-21-11:47:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
193 |
3065 | 194 #if (NGX_HAVE_AIO_SENDFILE) |
195 case NGX_EBUSY: | |
5980
ccad84a174e0
Refactored sendfile() AIO preload.
Valentin Bartenev <vbart@nginx.com>
parents:
5917
diff
changeset
|
196 ebusy = 1; |
3065 | 197 break; |
198 #endif | |
199 | |
3063
6f6d7ea70805
refactor EAGAIN/EINTR processing
Igor Sysoev <igor@sysoev.ru>
parents:
1354
diff
changeset
|
200 default: |
170
c42be4185301
nginx-0.0.1-2003-11-03-01:56:18 import
Igor Sysoev <igor@sysoev.ru>
parents:
163
diff
changeset
|
201 wev->error = 1; |
537 | 202 (void) ngx_connection_error(c, err, "sendfile() failed"); |
96
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
203 return NGX_CHAIN_ERROR; |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
204 } |
3063
6f6d7ea70805
refactor EAGAIN/EINTR processing
Igor Sysoev <igor@sysoev.ru>
parents:
1354
diff
changeset
|
205 |
6f6d7ea70805
refactor EAGAIN/EINTR processing
Igor Sysoev <igor@sysoev.ru>
parents:
1354
diff
changeset
|
206 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, err, |
6f6d7ea70805
refactor EAGAIN/EINTR processing
Igor Sysoev <igor@sysoev.ru>
parents:
1354
diff
changeset
|
207 "sendfile() sent only %O bytes", sent); |
96
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
208 |
483 | 209 /* |
210 * sendfile() in FreeBSD 3.x-4.x may return value >= 0 | |
211 * on success, although only 0 is documented | |
212 */ | |
213 | |
3080 | 214 } else if (rc >= 0 && sent == 0) { |
455 | 215 |
216 /* | |
483 | 217 * if rc is OK and sent equal to zero, then someone |
218 * has truncated the file, so the offset became beyond | |
219 * the end of the file | |
455 | 220 */ |
221 | |
222 ngx_log_error(NGX_LOG_ALERT, c->log, 0, | |
3081
10bfdd8d5eb9
log offset passed to sendfile()
Igor Sysoev <igor@sysoev.ru>
parents:
3080
diff
changeset
|
223 "sendfile() reported that \"%s\" was truncated at %O", |
10bfdd8d5eb9
log offset passed to sendfile()
Igor Sysoev <igor@sysoev.ru>
parents:
3080
diff
changeset
|
224 file->file->name.data, file->file_pos); |
455 | 225 |
226 return NGX_CHAIN_ERROR; | |
227 } | |
228 | |
214
e0c502f15852
nginx-0.0.1-2003-12-22-12:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
203
diff
changeset
|
229 ngx_log_debug4(NGX_LOG_DEBUG_EVENT, c->log, 0, |
461 | 230 "sendfile: %d, @%O %O:%uz", |
5913
8e903522c17a
Introduced the ngx_output_chain_to_iovec() function.
Valentin Bartenev <vbart@nginx.com>
parents:
5912
diff
changeset
|
231 rc, file->file_pos, sent, file_size + header.size); |
96
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
232 |
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
233 } else { |
5917
2c64b69daec5
Moved writev() handling code to a separate function.
Valentin Bartenev <vbart@nginx.com>
parents:
5916
diff
changeset
|
234 n = ngx_writev(c, &header); |
216
f1d0e5f09c1e
nginx-0.0.1-2003-12-25-23:26:58 import
Igor Sysoev <igor@sysoev.ru>
parents:
214
diff
changeset
|
235 |
5917
2c64b69daec5
Moved writev() handling code to a separate function.
Valentin Bartenev <vbart@nginx.com>
parents:
5916
diff
changeset
|
236 if (n == NGX_ERROR) { |
2c64b69daec5
Moved writev() handling code to a separate function.
Valentin Bartenev <vbart@nginx.com>
parents:
5916
diff
changeset
|
237 return NGX_CHAIN_ERROR; |
143
5526213be452
nginx-0.0.1-2003-10-10-19:10:50 import
Igor Sysoev <igor@sysoev.ru>
parents:
142
diff
changeset
|
238 } |
89
29bf798b583f
nginx-0.0.1-2003-05-15-19:42:53 import
Igor Sysoev <igor@sysoev.ru>
parents:
88
diff
changeset
|
239 |
5917
2c64b69daec5
Moved writev() handling code to a separate function.
Valentin Bartenev <vbart@nginx.com>
parents:
5916
diff
changeset
|
240 sent = (n == NGX_AGAIN) ? 0 : n; |
96
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
241 } |
63
36d2c25cc9bb
nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
242 |
96
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
243 c->sent += sent; |
63
36d2c25cc9bb
nginx-0.0.1-2003-02-26-23:21:43 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
244 |
5912
de68ed551bfb
Renamed ngx_handle_sent_chain() to ngx_chain_update_sent().
Valentin Bartenev <vbart@nginx.com>
parents:
5868
diff
changeset
|
245 in = ngx_chain_update_sent(in, sent); |
96
a23d010f356d
nginx-0.0.1-2003-05-27-16:18:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
94
diff
changeset
|
246 |
3065 | 247 #if (NGX_HAVE_AIO_SENDFILE) |
5980
ccad84a174e0
Refactored sendfile() AIO preload.
Valentin Bartenev <vbart@nginx.com>
parents:
5917
diff
changeset
|
248 |
ccad84a174e0
Refactored sendfile() AIO preload.
Valentin Bartenev <vbart@nginx.com>
parents:
5917
diff
changeset
|
249 if (ebusy) { |
ccad84a174e0
Refactored sendfile() AIO preload.
Valentin Bartenev <vbart@nginx.com>
parents:
5917
diff
changeset
|
250 if (sent == 0) { |
ccad84a174e0
Refactored sendfile() AIO preload.
Valentin Bartenev <vbart@nginx.com>
parents:
5917
diff
changeset
|
251 c->busy_count++; |
ccad84a174e0
Refactored sendfile() AIO preload.
Valentin Bartenev <vbart@nginx.com>
parents:
5917
diff
changeset
|
252 |
ccad84a174e0
Refactored sendfile() AIO preload.
Valentin Bartenev <vbart@nginx.com>
parents:
5917
diff
changeset
|
253 if (c->busy_count > 2) { |
ccad84a174e0
Refactored sendfile() AIO preload.
Valentin Bartenev <vbart@nginx.com>
parents:
5917
diff
changeset
|
254 ngx_log_error(NGX_LOG_ALERT, c->log, 0, |
ccad84a174e0
Refactored sendfile() AIO preload.
Valentin Bartenev <vbart@nginx.com>
parents:
5917
diff
changeset
|
255 "sendfile(%V) returned busy again", |
ccad84a174e0
Refactored sendfile() AIO preload.
Valentin Bartenev <vbart@nginx.com>
parents:
5917
diff
changeset
|
256 &file->file->name); |
ccad84a174e0
Refactored sendfile() AIO preload.
Valentin Bartenev <vbart@nginx.com>
parents:
5917
diff
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|
257 |
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258 c->busy_count = 0; |
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259 aio->preload_handler = NULL; |
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260 |
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261 send = prev_send; |
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262 continue; |
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263 } |
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264 |
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265 } else { |
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266 c->busy_count = 0; |
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267 } |
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268 |
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269 n = aio->preload_handler(file); |
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270 |
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271 if (n > 0) { |
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272 send = prev_send + sent; |
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273 continue; |
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274 } |
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275 |
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276 return in; |
3065 | 277 } |
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278 |
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279 if (flags == SF_NODISKIO) { |
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280 c->busy_count = 0; |
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281 } |
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282 |
3065 | 283 #endif |
284 | |
152
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285 if (eagain) { |
155
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286 |
153
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287 /* |
479 | 288 * sendfile() may return EAGAIN, even if it has sent a whole file |
289 * part, it indicates that the successive sendfile() call would | |
253
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290 * return EAGAIN right away and would not send anything. |
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291 * We use it as a hint. |
153
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292 */ |
155
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293 |
170
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294 wev->ready = 0; |
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295 return in; |
362
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296 } |
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297 |
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298 if (eintr) { |
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299 send = prev_send + sent; |
362
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300 continue; |
152
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301 } |
96
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302 |
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303 if (send - prev_send != sent) { |
362
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304 wev->ready = 0; |
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305 return in; |
362
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306 } |
152
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307 |
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308 if (send >= limit || in == NULL) { |
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309 return in; |
362
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310 } |
142
cb77c084acdb
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311 } |
63
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312 } |