Mercurial > hg > nginx
view src/os/unix/ngx_socket.h @ 6949:ff0c8e11edbc
Simplified and improved sendfile() code on Linux.
The ngx_linux_sendfile() function is now used for both normal sendfile()
and sendfile in threads. The ngx_linux_sendfile_thread() function was
modified to use the same interface as ngx_linux_sendfile(), and is simply
called from ngx_linux_sendfile() when threads are enabled.
Special return code NGX_DONE is used to indicate that a thread task was
posted and no further actions are needed.
If number of bytes sent is less that what we were sending, we now always
retry sending. This is needed for sendfile() in threads as the number
of bytes we are sending might have been changed since the thread task
was posted. And this is also needed for Linux 4.3+, as sendfile() might
be interrupted at any time and provides no indication if it was interrupted
or not (ticket #1174).
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Tue, 28 Mar 2017 18:15:39 +0300 |
parents | d620f497c50f |
children | efd71d49bde0 |
line wrap: on
line source
/* * Copyright (C) Igor Sysoev * Copyright (C) Nginx, Inc. */ #ifndef _NGX_SOCKET_H_INCLUDED_ #define _NGX_SOCKET_H_INCLUDED_ #include <ngx_config.h> #define NGX_WRITE_SHUTDOWN SHUT_WR typedef int ngx_socket_t; #define ngx_socket socket #define ngx_socket_n "socket()" #if (NGX_HAVE_FIONBIO) int ngx_nonblocking(ngx_socket_t s); int ngx_blocking(ngx_socket_t s); #define ngx_nonblocking_n "ioctl(FIONBIO)" #define ngx_blocking_n "ioctl(!FIONBIO)" #else #define ngx_nonblocking(s) fcntl(s, F_SETFL, fcntl(s, F_GETFL) | O_NONBLOCK) #define ngx_nonblocking_n "fcntl(O_NONBLOCK)" #define ngx_blocking(s) fcntl(s, F_SETFL, fcntl(s, F_GETFL) & ~O_NONBLOCK) #define ngx_blocking_n "fcntl(!O_NONBLOCK)" #endif int ngx_tcp_nopush(ngx_socket_t s); int ngx_tcp_push(ngx_socket_t s); #if (NGX_LINUX) #define ngx_tcp_nopush_n "setsockopt(TCP_CORK)" #define ngx_tcp_push_n "setsockopt(!TCP_CORK)" #else #define ngx_tcp_nopush_n "setsockopt(TCP_NOPUSH)" #define ngx_tcp_push_n "setsockopt(!TCP_NOPUSH)" #endif #define ngx_shutdown_socket shutdown #define ngx_shutdown_socket_n "shutdown()" #define ngx_close_socket close #define ngx_close_socket_n "close() socket" #endif /* _NGX_SOCKET_H_INCLUDED_ */