1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
|
/*
* Copyright (C) Igor Sysoev
*/
#include <ngx_config.h>
#include <ngx_core.h>
/*
* ioctl(FIONBIO) sets a blocking mode with the single syscall
* while fcntl(F_SETFL, ~O_NONBLOCK) needs to learn before
* the previous state using fcntl(F_GETFL).
*
* ioctl() and fcntl() are syscalls on at least FreeBSD 2.x, Linux 2.2
* and Solaris 7.
*
* ioctl() in Linux 2.4 and 2.6 uses BKL, however, fcntl(F_SETFL) uses it too.
*/
#if (NGX_HAVE_FIONBIO)
int ngx_nonblocking(ngx_socket_t s)
{
u_long nb;
nb = 1;
return ioctl(s, FIONBIO, &nb);
}
int ngx_blocking(ngx_socket_t s)
{
u_long nb;
nb = 0;
return ioctl(s, FIONBIO, &nb);
}
#endif
#if (NGX_FREEBSD)
int ngx_tcp_nopush(ngx_socket_t s)
{
int tcp_nopush;
tcp_nopush = 1;
return setsockopt(s, IPPROTO_TCP, TCP_NOPUSH,
(const void *) &tcp_nopush, sizeof(int));
}
int ngx_tcp_push(ngx_socket_t s)
{
int tcp_nopush;
tcp_nopush = 0;
return setsockopt(s, IPPROTO_TCP, TCP_NOPUSH,
(const void *) &tcp_nopush, sizeof(int));
}
#elif (NGX_LINUX)
int ngx_tcp_nopush(ngx_socket_t s)
{
int cork;
cork = 1;
return setsockopt(s, IPPROTO_TCP, TCP_CORK,
(const void *) &cork, sizeof(int));
}
int ngx_tcp_push(ngx_socket_t s)
{
int cork;
cork = 0;
return setsockopt(s, IPPROTO_TCP, TCP_CORK,
(const void *) &cork, sizeof(int));
}
#else
int ngx_tcp_nopush(ngx_socket_t s)
{
return NGX_OK;
}
int ngx_tcp_push(ngx_socket_t s)
{
return NGX_OK;
}
#endif
|
