annotate src/os/unix/ngx_os.h @ 391:1d9bef53cd8e

Range filter: late_ranges functionality. Add one more filtering point after postpone filter. This allows to serve range capable replies with subrequests. It's not as efficient as range filtering for static data (i.e. doesn't save us from reading data from disk if some filter needs them in memory), but it may save some network bandwidth for us and for our users.
author Maxim Dounin <mdounin@mdounin.ru>
date Mon, 21 Jul 2008 05:33:01 +0400
parents 583decdb82a4
children 0b6053502c55
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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7 #ifndef _NGX_OS_H_INCLUDED_
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8 #define _NGX_OS_H_INCLUDED_
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11 #include <ngx_config.h>
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12 #include <ngx_core.h>
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15 #define NGX_IO_SENDFILE 1
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16 #define NGX_IO_ZEROCOPY 2
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19 typedef ssize_t (*ngx_recv_pt)(ngx_connection_t *c, u_char *buf, size_t size);
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20 typedef ssize_t (*ngx_recv_chain_pt)(ngx_connection_t *c, ngx_chain_t *in);
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21 typedef ssize_t (*ngx_send_pt)(ngx_connection_t *c, u_char *buf, size_t size);
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22 typedef ngx_chain_t *(*ngx_send_chain_pt)(ngx_connection_t *c, ngx_chain_t *in,
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23 off_t limit);
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25 typedef struct {
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26 ngx_recv_pt recv;
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27 ngx_recv_chain_pt recv_chain;
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28 ngx_recv_pt udp_recv;
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29 ngx_send_pt send;
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30 ngx_send_chain_pt send_chain;
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31 ngx_uint_t flags;
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32 } ngx_os_io_t;
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35 void ngx_debug_init(void);
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36 ngx_int_t ngx_os_init(ngx_log_t *log);
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37 void ngx_os_status(ngx_log_t *log);
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38 ngx_int_t ngx_os_specific_init(ngx_log_t *log);
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39 void ngx_os_specific_status(ngx_log_t *log);
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40 ngx_int_t ngx_daemon(ngx_log_t *log);
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43 ssize_t ngx_unix_recv(ngx_connection_t *c, u_char *buf, size_t size);
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44 ssize_t ngx_readv_chain(ngx_connection_t *c, ngx_chain_t *entry);
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45 ssize_t ngx_udp_unix_recv(ngx_connection_t *c, u_char *buf, size_t size);
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46 ssize_t ngx_unix_send(ngx_connection_t *c, u_char *buf, size_t size);
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47 ngx_chain_t *ngx_writev_chain(ngx_connection_t *c, ngx_chain_t *in,
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48 off_t limit);
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51 extern ngx_os_io_t ngx_os_io;
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52 extern ngx_int_t ngx_ncpu;
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53 extern ngx_int_t ngx_max_sockets;
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54 extern ngx_uint_t ngx_inherited_nonblocking;
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55 extern ngx_uint_t ngx_tcp_nodelay_and_tcp_nopush;
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57 #define ngx_stderr_fileno STDERR_FILENO
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59 #if (NGX_FREEBSD)
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60 #include <ngx_freebsd.h>
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63 #elif (NGX_LINUX)
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64 #include <ngx_linux.h>
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67 #elif (NGX_SOLARIS)
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68 #include <ngx_solaris.h>
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69 #endif
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72 #endif /* _NGX_OS_H_INCLUDED_ */