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/*
* Copyright (C) Igor Sysoev
* Copyright (C) Nginx, Inc.
*/
#include <ngx_config.h>
#include <ngx_core.h>
/*
* ioctl(FIONBIO) sets a non-blocking mode with the single syscall
* while fcntl(F_SETFL, O_NONBLOCK) needs to learn the current state
* using fcntl(F_GETFL).
*
* ioctl() and fcntl() are syscalls at least in 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)
{
int nb;
nb = 1;
return ioctl(s, FIONBIO, &nb);
}
int
ngx_blocking(ngx_socket_t s)
{
int 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 0;
}
int
ngx_tcp_push(ngx_socket_t s)
{
return 0;
}
#endif
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