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comparison src/os/unix/ngx_solaris_sendfilev_chain.c @ 0:f0b350454894 NGINX_0_1_0

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nginx 0.1.0 *) The first public version.
author Igor Sysoev <http://sysoev.ru>
date Mon, 04 Oct 2004 00:00:00 +0400
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children cc9f381affaa
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-1:000000000000 0:f0b350454894
1
2 /*
3 * Copyright (C) Igor Sysoev
4 */
5
6
7 #include <ngx_config.h>
8 #include <ngx_core.h>
9 #include <ngx_event.h>
10
11
12 #define NGX_SENDFILEVECS 16
13
14
15 ngx_chain_t *ngx_solaris_sendfilev_chain(ngx_connection_t *c, ngx_chain_t *in,
16 off_t limit)
17 {
18 int fd;
19 u_char *prev;
20 off_t fprev, sprev, send, aligned;
21 ssize_t size, sent, n;
22 ngx_int_t eintr, complete;
23 ngx_err_t err;
24 sendfilevec_t *sfv, sfvs[NGX_SENDFILEVECS];
25 ngx_array_t vec;
26 ngx_event_t *wev;
27 ngx_chain_t *cl, *tail;
28
29 wev = c->write;
30
31 if (!wev->ready) {
32 return in;
33 }
34
35 send = 0;
36 complete = 0;
37
38 vec.elts = sfvs;
39 vec.size = sizeof(sendfilevec_t);
40 vec.nalloc = NGX_SENDFILEVECS;
41 vec.pool = c->pool;
42
43 for ( ;; ) {
44 fd = SFV_FD_SELF;
45 prev = NULL;
46 fprev = 0;
47 sfv = NULL;
48 eintr = 0;
49 sent = 0;
50 sprev = send;
51
52 vec.nelts = 0;
53
54 /* create the sendfilevec and coalesce the neighbouring bufs */
55
56 for (cl = in; cl && vec.nelts < IOV_MAX && send < limit; cl = cl->next)
57 {
58 if (ngx_buf_special(cl->buf)) {
59 continue;
60 }
61
62 if (ngx_buf_in_memory_only(cl->buf)) {
63 fd = SFV_FD_SELF;
64
65 size = cl->buf->last - cl->buf->pos;
66
67 if (send + size > limit) {
68 size = limit - send;
69 }
70
71 if (prev == cl->buf->pos) {
72 sfv->sfv_len += size;
73
74 } else {
75 if (!(sfv = ngx_array_push(&vec))) {
76 return NGX_CHAIN_ERROR;
77 }
78
79 sfv->sfv_fd = SFV_FD_SELF;
80 sfv->sfv_flag = 0;
81 sfv->sfv_off = (off_t) (uintptr_t) cl->buf->pos;
82 sfv->sfv_len = size;
83 }
84
85 prev = cl->buf->pos + size;
86 send += size;
87
88 } else {
89 prev = NULL;
90
91 size = (size_t) (cl->buf->file_last - cl->buf->file_pos);
92
93 if (send + size > limit) {
94 size = limit - send;
95
96 aligned = (cl->buf->file_pos + size + ngx_pagesize - 1)
97 & ~(ngx_pagesize - 1);
98
99 if (aligned <= cl->buf->file_last) {
100 size = aligned - cl->buf->file_pos;
101 }
102 }
103
104 if (fd == cl->buf->file->fd && fprev == cl->buf->file_pos) {
105 sfv->sfv_len += size;
106
107 } else {
108 if (!(sfv = ngx_array_push(&vec))) {
109 return NGX_CHAIN_ERROR;
110 }
111
112 fd = cl->buf->file->fd;
113 sfv->sfv_fd = fd;
114 sfv->sfv_flag = 0;
115 sfv->sfv_off = cl->buf->file_pos;
116 sfv->sfv_len = size;
117 }
118
119 fprev = cl->buf->file_pos + size;
120 send += size;
121 }
122 }
123
124 n = sendfilev(c->fd, vec.elts, vec.nelts, &sent);
125
126 if (n == -1) {
127 err = ngx_errno;
128
129 if (err == NGX_EAGAIN || err == NGX_EINTR) {
130 if (err == NGX_EINTR) {
131 eintr = 1;
132 }
133
134 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, err,
135 "sendfilev() sent only " SIZE_T_FMT " bytes",
136 sent);
137
138 } else {
139 wev->error = 1;
140 ngx_connection_error(c, err, "sendfilev() failed");
141 return NGX_CHAIN_ERROR;
142 }
143 }
144
145 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, c->log, 0,
146 "sendfilev: %d " SIZE_T_FMT, n, sent);
147
148 if (send - sprev == sent) {
149 complete = 1;
150 }
151
152 c->sent += sent;
153
154 for (cl = in; cl; cl = cl->next) {
155
156 if (ngx_buf_special(cl->buf)) {
157 continue;
158 }
159
160 if (sent == 0) {
161 break;
162 }
163
164 size = ngx_buf_size(cl->buf);
165
166 if (sent >= size) {
167 sent -= size;
168
169 if (ngx_buf_in_memory(cl->buf)) {
170 cl->buf->pos = cl->buf->last;
171 }
172
173 if (cl->buf->in_file) {
174 cl->buf->file_pos = cl->buf->file_last;
175 }
176
177 continue;
178 }
179
180 if (ngx_buf_in_memory(cl->buf)) {
181 cl->buf->pos += sent;
182 }
183
184 if (cl->buf->in_file) {
185 cl->buf->file_pos += sent;
186 }
187
188 break;
189 }
190
191 if (eintr) {
192 continue;
193 }
194
195 if (!complete) {
196 wev->ready = 0;
197 return cl;
198 }
199
200 if (send >= limit || cl == NULL) {
201 return cl;
202 }
203
204 in = cl;
205 }
206 }