Mercurial > hg > nginx-quic
annotate src/os/unix/ngx_linux_sendfile_chain.c @ 126:fcc79370b9a8
nginx-0.0.1-2003-08-06-18:43:50 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Wed, 06 Aug 2003 14:43:50 +0000 |
parents | 70d2345a903f |
children | 8dee38ea9117 |
rev | line source |
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97
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nginx-0.0.1-2003-05-29-17:02:09 import
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1 |
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2 #include <ngx_config.h> |
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3 #include <ngx_core.h> |
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4 #include <ngx_linux_init.h> |
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5 |
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6 |
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7 ngx_chain_t *ngx_linux_sendfile_chain(ngx_connection_t *c, ngx_chain_t *in) |
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8 { |
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9 int rc, on, off; |
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10 char *prev; |
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11 size_t hsize, size; |
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12 ssize_t sent; |
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13 struct iovec *iov; |
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14 struct sf_hdtr hdtr; |
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15 ngx_err_t err; |
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16 ngx_array_t header, trailer; |
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17 ngx_hunk_t *file; |
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18 ngx_chain_t *ce; |
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19 |
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20 ce = in; |
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21 file = NULL; |
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22 hsize = 0; |
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23 |
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24 on = 1; |
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25 off = 0; |
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26 |
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27 ngx_init_array(header, c->pool, 10, sizeof(struct iovec), NGX_CHAIN_ERROR); |
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28 ngx_init_array(trailer, c->pool, 10, sizeof(struct iovec), NGX_CHAIN_ERROR); |
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29 |
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30 /* create the header iovec */ |
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31 if (ngx_hunk_in_memory_only(ce->hunk)) { |
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32 prev = NULL; |
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33 iov = NULL; |
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34 |
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35 /* create the iovec and coalesce the neighbouring chain entries */ |
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36 while (ce && ngx_hunk_in_memory_only(ce->hunk)) { |
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37 |
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38 if (prev == ce->hunk->pos) { |
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39 iov->iov_len += ce->hunk->last - ce->hunk->pos; |
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40 prev = ce->hunk->last; |
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41 |
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42 } else { |
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43 ngx_test_null(iov, ngx_push_array(&header), NGX_CHAIN_ERROR); |
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44 iov->iov_base = ce->hunk->pos; |
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45 iov->iov_len = ce->hunk->last - ce->hunk->pos; |
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46 prev = ce->hunk->last; |
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47 } |
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48 |
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49 if (ngx_freebsd_sendfile_nbytes_bug) { |
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50 hsize += ce->hunk->last - ce->hunk->pos; |
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51 } |
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52 |
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53 ce = ce->next; |
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54 } |
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55 } |
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56 |
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57 /* TODO: coalesce the neighbouring file hunks */ |
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58 if (ce && (ce->hunk->type & NGX_HUNK_FILE)) { |
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59 file = ce->hunk; |
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60 ce = ce->next; |
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61 } |
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62 |
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63 /* create the trailer iovec */ |
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64 if (ce && ngx_hunk_in_memory_only(ce->hunk)) { |
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65 prev = NULL; |
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66 iov = NULL; |
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67 |
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68 /* create the iovec and coalesce the neighbouring chain entries */ |
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69 while (ce && ngx_hunk_in_memory_only(ce->hunk)) { |
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70 |
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71 if (prev == ce->hunk->pos) { |
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72 iov->iov_len += ce->hunk->last - ce->hunk->pos; |
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73 prev = ce->hunk->last; |
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74 |
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75 } else { |
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76 ngx_test_null(iov, ngx_push_array(&trailer), NGX_CHAIN_ERROR); |
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77 iov->iov_base = ce->hunk->pos; |
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78 iov->iov_len = ce->hunk->last - ce->hunk->pos; |
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79 prev = ce->hunk->last; |
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80 } |
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81 |
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82 ce = ce->next; |
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83 } |
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84 } |
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85 |
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86 if (file) { |
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87 if (setsockopt(c->fd, IPPROTO_TCP, TCP_CORK, |
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88 (const void *) &on, sizeof(int)) == -1) { |
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89 ngx_log_error(NGX_LOG_CRIT, c->log, err, |
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90 "setsockopt(TCP_CORK, 1) failed"); |
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91 return NGX_CHAIN_ERROR; |
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92 } |
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93 |
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94 |
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95 rc = sendfile(c->fd, file->file->fd, file->file_pos, |
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96 (size_t) (file->file_last - file->file_pos)); |
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97 |
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98 if (rc == -1) { |
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99 err = ngx_errno; |
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100 if (err == NGX_EAGAIN) { |
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101 ngx_log_error(NGX_LOG_INFO, c->log, err, "senfile() EAGAIN"); |
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102 |
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103 } else if (err == NGX_EINTR) { |
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104 ngx_log_error(NGX_LOG_INFO, c->log, err, "senfile() EINTR"); |
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105 |
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|
106 } else { |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
107 ngx_log_error(NGX_LOG_CRIT, c->log, err, "sendfile() failed"); |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
108 return NGX_CHAIN_ERROR; |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
109 } |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
110 } |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
111 |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
112 sent = rc > 0 ? rc : 0; |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
113 |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
114 #if (NGX_DEBUG_WRITE_CHAIN) |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
115 ngx_log_debug(c->log, "sendfile: %d, @%qd %d:%d" _ |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
116 rc _ file->file_pos _ sent _ |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
117 (size_t) (file->file_last - file->file_pos)); |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
118 #endif |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
119 |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
120 } else { |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
121 rc = writev(c->fd, (struct iovec *) header.elts, header.nelts); |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
122 |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
123 if (rc == -1) { |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
124 err = ngx_errno; |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
125 if (err == NGX_EAGAIN) { |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
126 ngx_log_error(NGX_LOG_INFO, c->log, err, "writev() EAGAIN"); |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
127 |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
128 } else if (err == NGX_EINTR) { |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
129 ngx_log_error(NGX_LOG_INFO, c->log, err, "writev() EINTR"); |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
130 |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
131 } else { |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
132 ngx_log_error(NGX_LOG_CRIT, c->log, err, "writev() failed"); |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
133 return NGX_CHAIN_ERROR; |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
134 } |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
135 } |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
136 |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
137 sent = rc > 0 ? rc : 0; |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
138 |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
139 #if (NGX_DEBUG_WRITE_CHAIN) |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
140 ngx_log_debug(c->log, "writev: %d" _ sent); |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
141 #endif |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
142 } |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
143 |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
144 c->sent += sent; |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
145 |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
146 for (ce = in; ce && sent > 0; ce = ce->next) { |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
147 |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
148 if (ce->hunk->type & NGX_HUNK_IN_MEMORY) { |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
149 size = ce->hunk->last - ce->hunk->pos; |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
150 } else { |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
151 size = ce->hunk->file_last - ce->hunk->file_pos; |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
152 } |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
153 |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
154 if (sent >= size) { |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
155 sent -= size; |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
156 |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
157 if (ce->hunk->type & NGX_HUNK_IN_MEMORY) { |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
158 ce->hunk->pos = ce->hunk->last; |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
159 } |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
160 |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
161 if (ce->hunk->type & NGX_HUNK_FILE) { |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
162 ce->hunk->file_pos = ce->hunk->file_last; |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
163 } |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
164 |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
165 continue; |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
166 } |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
167 |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
168 if (ce->hunk->type & NGX_HUNK_IN_MEMORY) { |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
169 ce->hunk->pos += sent; |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
170 } |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
171 |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
172 if (ce->hunk->type & NGX_HUNK_FILE) { |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
173 ce->hunk->file_pos += sent; |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
174 } |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
175 |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
176 break; |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
177 } |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
178 |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
179 ngx_destroy_array(&trailer); |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
180 ngx_destroy_array(&header); |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
181 |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
182 return ce; |
70d2345a903f
nginx-0.0.1-2003-05-29-17:02:09 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
183 } |