Mercurial > hg > nginx-vendor-0-5
comparison src/os/unix/ngx_recv.c @ 0:f0b350454894 NGINX_0_1_0
nginx 0.1.0
*) The first public version.
author | Igor Sysoev <http://sysoev.ru> |
---|---|
date | Mon, 04 Oct 2004 00:00:00 +0400 |
parents | |
children | 4b2dafa26fe2 |
comparison
equal
deleted
inserted
replaced
-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 #if (HAVE_KQUEUE) | |
13 | |
14 ssize_t ngx_unix_recv(ngx_connection_t *c, u_char *buf, size_t size) | |
15 { | |
16 ssize_t n; | |
17 ngx_err_t err; | |
18 ngx_event_t *rev; | |
19 | |
20 rev = c->read; | |
21 | |
22 if (ngx_event_flags & NGX_HAVE_KQUEUE_EVENT) { | |
23 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0, | |
24 "recv: eof:%d, avail:%d, err:%d", | |
25 rev->pending_eof, rev->available, rev->kq_errno); | |
26 | |
27 if (rev->available == 0) { | |
28 if (rev->pending_eof) { | |
29 rev->ready = 0; | |
30 rev->eof = 1; | |
31 | |
32 ngx_log_error(NGX_LOG_INFO, c->log, rev->kq_errno, | |
33 "kevent() reported about an closed connection"); | |
34 | |
35 if (rev->kq_errno) { | |
36 rev->error = 1; | |
37 ngx_set_socket_errno(rev->kq_errno); | |
38 | |
39 if (rev->kq_errno == NGX_ECONNRESET | |
40 && c->log_error == NGX_ERROR_IGNORE_ECONNRESET) | |
41 { | |
42 return 0; | |
43 } | |
44 | |
45 return NGX_ERROR; | |
46 } | |
47 | |
48 return 0; | |
49 | |
50 } else { | |
51 return NGX_AGAIN; | |
52 } | |
53 } | |
54 } | |
55 | |
56 do { | |
57 n = recv(c->fd, buf, size, 0); | |
58 | |
59 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0, | |
60 "recv: fd:%d %d of %d", c->fd, n, size); | |
61 | |
62 if (n >= 0) { | |
63 if (ngx_event_flags & NGX_HAVE_KQUEUE_EVENT) { | |
64 rev->available -= n; | |
65 | |
66 /* | |
67 * rev->available can be negative here because some additional | |
68 * bytes can be received between kevent() and recv() | |
69 */ | |
70 | |
71 if (rev->available <= 0) { | |
72 if (!rev->pending_eof) { | |
73 rev->ready = 0; | |
74 } | |
75 | |
76 if (rev->available < 0) { | |
77 rev->available = 0; | |
78 } | |
79 } | |
80 | |
81 return n; | |
82 } | |
83 | |
84 if ((size_t) n < size) { | |
85 rev->ready = 0; | |
86 } | |
87 | |
88 if (n == 0) { | |
89 rev->eof = 1; | |
90 } | |
91 | |
92 return n; | |
93 } | |
94 | |
95 err = ngx_socket_errno; | |
96 | |
97 if (err == NGX_EAGAIN || err == NGX_EINTR) { | |
98 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, | |
99 "recv() not ready"); | |
100 n = NGX_AGAIN; | |
101 | |
102 } else { | |
103 n = ngx_connection_error(c, err, "recv() failed"); | |
104 break; | |
105 } | |
106 | |
107 } while (err == NGX_EINTR); | |
108 | |
109 rev->ready = 0; | |
110 | |
111 if (n == NGX_ERROR){ | |
112 rev->error = 1; | |
113 } | |
114 | |
115 return n; | |
116 } | |
117 | |
118 #else /* ! NAVE_KQUEUE */ | |
119 | |
120 ssize_t ngx_unix_recv(ngx_connection_t *c, u_char *buf, size_t size) | |
121 { | |
122 ssize_t n; | |
123 ngx_err_t err; | |
124 ngx_event_t *rev; | |
125 | |
126 rev = c->read; | |
127 | |
128 do { | |
129 n = recv(c->fd, buf, size, 0); | |
130 | |
131 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0, | |
132 "recv: fd:%d %d of %d", c->fd, n, size); | |
133 | |
134 if (n == 0) { | |
135 rev->ready = 0; | |
136 rev->eof = 1; | |
137 return n; | |
138 | |
139 } else if (n > 0) { | |
140 | |
141 if ((size_t) n < size | |
142 && !(ngx_event_flags & NGX_HAVE_GREEDY_EVENT)) | |
143 { | |
144 rev->ready = 0; | |
145 } | |
146 | |
147 return n; | |
148 } | |
149 | |
150 err = ngx_socket_errno; | |
151 | |
152 if (err == NGX_EAGAIN || err == NGX_EINTR) { | |
153 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, | |
154 "recv() not ready"); | |
155 n = NGX_AGAIN; | |
156 | |
157 } else { | |
158 n = ngx_connection_error(c, err, "recv() failed"); | |
159 break; | |
160 } | |
161 | |
162 } while (err == NGX_EINTR); | |
163 | |
164 rev->ready = 0; | |
165 | |
166 if (n == NGX_ERROR){ | |
167 rev->error = 1; | |
168 } | |
169 | |
170 return n; | |
171 } | |
172 | |
173 #endif /* NAVE_KQUEUE */ |