Mercurial > hg > nginx
comparison src/os/unix/ngx_udp_recv.c @ 1689:0b592a68aade
ngx_udp_recv()
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Mon, 03 Dec 2007 16:46:46 +0000 |
parents | src/os/unix/ngx_recv.c@3d732338aec2 |
children | ac33852faaac |
comparison
equal
deleted
inserted
replaced
1688:bd85a95d60c6 | 1689:0b592a68aade |
---|---|
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 (NGX_HAVE_KQUEUE) | |
13 | |
14 ssize_t | |
15 ngx_udp_unix_recv(ngx_connection_t *c, u_char *buf, size_t size) | |
16 { | |
17 ssize_t n; | |
18 ngx_err_t err; | |
19 ngx_event_t *rev; | |
20 | |
21 rev = c->read; | |
22 | |
23 do { | |
24 n = recv(c->fd, buf, size, 0); | |
25 | |
26 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0, | |
27 "recv: fd:%d %d of %d", c->fd, n, size); | |
28 | |
29 if (n >= 0) { | |
30 if (ngx_event_flags & NGX_USE_KQUEUE_EVENT) { | |
31 rev->available -= n; | |
32 | |
33 /* | |
34 * rev->available may be negative here because some additional | |
35 * bytes may be received between kevent() and recv() | |
36 */ | |
37 | |
38 if (rev->available <= 0) { | |
39 rev->ready = 0; | |
40 rev->available = 0; | |
41 } | |
42 } | |
43 | |
44 return n; | |
45 } | |
46 | |
47 err = ngx_socket_errno; | |
48 | |
49 if (err == NGX_EAGAIN || err == NGX_EINTR) { | |
50 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, | |
51 "recv() not ready"); | |
52 n = NGX_AGAIN; | |
53 | |
54 } else { | |
55 n = ngx_connection_error(c, err, "recv() failed"); | |
56 break; | |
57 } | |
58 | |
59 } while (err == NGX_EINTR); | |
60 | |
61 rev->ready = 0; | |
62 | |
63 if (n == NGX_ERROR){ | |
64 rev->error = 1; | |
65 } | |
66 | |
67 return n; | |
68 } | |
69 | |
70 #else /* ! NGX_HAVE_KQUEUE */ | |
71 | |
72 ssize_t | |
73 ngx_udp_unix_recv(ngx_connection_t *c, u_char *buf, size_t size) | |
74 { | |
75 ssize_t n; | |
76 ngx_err_t err; | |
77 ngx_event_t *rev; | |
78 | |
79 rev = c->read; | |
80 | |
81 do { | |
82 n = recv(c->fd, buf, size, 0); | |
83 | |
84 ngx_log_debug3(NGX_LOG_DEBUG_EVENT, c->log, 0, | |
85 "recv: fd:%d %d of %d", c->fd, n, size); | |
86 | |
87 if (n >= 0) { | |
88 return n; | |
89 } | |
90 | |
91 err = ngx_socket_errno; | |
92 | |
93 if (err == NGX_EAGAIN || err == NGX_EINTR) { | |
94 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, c->log, err, | |
95 "recv() not ready"); | |
96 n = NGX_AGAIN; | |
97 | |
98 } else { | |
99 n = ngx_connection_error(c, err, "recv() failed"); | |
100 break; | |
101 } | |
102 | |
103 } while (err == NGX_EINTR); | |
104 | |
105 rev->ready = 0; | |
106 | |
107 if (n == NGX_ERROR){ | |
108 rev->error = 1; | |
109 } | |
110 | |
111 return n; | |
112 } | |
113 | |
114 #endif /* NGX_HAVE_KQUEUE */ |