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annotate src/os/unix/ngx_os.h @ 5905:2f7e557eab5b

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Cache: proxy_cache_lock_age and friends. Once this age is reached, the cache lock is discarded and another request can acquire the lock. Requests which failed to acquire the lock are not allowed to cache the response.
author Roman Arutyunyan <arut@nginx.com>
date Tue, 18 Nov 2014 20:41:12 +0300
parents ec81934727a1
children 8e903522c17a
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2 /*
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3 * Copyright (C) Igor Sysoev
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d620f497c50f Copyright updated.
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4 * Copyright (C) Nginx, Inc.
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5 */
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8 #ifndef _NGX_OS_H_INCLUDED_
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9 #define _NGX_OS_H_INCLUDED_
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12 #include <ngx_config.h>
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13 #include <ngx_core.h>
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16 #define NGX_IO_SENDFILE 1
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4c698194c56d nginx-0.0.1-2003-11-13-19:16:33 import
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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 off_t limit);
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22 typedef ssize_t (*ngx_send_pt)(ngx_connection_t *c, u_char *buf, size_t size);
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23 typedef ngx_chain_t *(*ngx_send_chain_pt)(ngx_connection_t *c, ngx_chain_t *in,
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24 off_t limit);
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26 typedef struct {
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27 ngx_recv_pt recv;
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28 ngx_recv_chain_pt recv_chain;
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29 ngx_recv_pt udp_recv;
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30 ngx_send_pt send;
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31 ngx_send_chain_pt send_chain;
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32 ngx_uint_t flags;
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33 } ngx_os_io_t;
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35
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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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41 ngx_int_t ngx_os_signal_process(ngx_cycle_t *cycle, char *sig, ngx_int_t pid);
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44 ssize_t ngx_unix_recv(ngx_connection_t *c, u_char *buf, size_t size);
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45 ssize_t ngx_readv_chain(ngx_connection_t *c, ngx_chain_t *entry, off_t limit);
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46 ssize_t ngx_udp_unix_recv(ngx_connection_t *c, u_char *buf, size_t size);
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47 ssize_t ngx_unix_send(ngx_connection_t *c, u_char *buf, size_t size);
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48 ngx_chain_t *ngx_writev_chain(ngx_connection_t *c, ngx_chain_t *in,
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49 off_t limit);
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50
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51 #if (NGX_HAVE_AIO)
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52 ssize_t ngx_aio_read(ngx_connection_t *c, u_char *buf, size_t size);
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53 ssize_t ngx_aio_read_chain(ngx_connection_t *c, ngx_chain_t *cl, off_t limit);
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54 ssize_t ngx_aio_write(ngx_connection_t *c, u_char *buf, size_t size);
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55 ngx_chain_t *ngx_aio_write_chain(ngx_connection_t *c, ngx_chain_t *in,
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56 off_t limit);
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57 #endif
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59
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60 #if (IOV_MAX > 64)
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61 #define NGX_IOVS_PREALLOCATE 64
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62 #else
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63 #define NGX_IOVS_PREALLOCATE IOV_MAX
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64 #endif
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65
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67 extern ngx_os_io_t ngx_os_io;
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68 extern ngx_int_t ngx_ncpu;
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69 extern ngx_int_t ngx_max_sockets;
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70 extern ngx_uint_t ngx_inherited_nonblocking;
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71 extern ngx_uint_t ngx_tcp_nodelay_and_tcp_nopush;
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73
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74 #if (NGX_FREEBSD)
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75 #include <ngx_freebsd.h>
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78 #elif (NGX_LINUX)
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79 #include <ngx_linux.h>
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81
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82 #elif (NGX_SOLARIS)
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83 #include <ngx_solaris.h>
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86 #elif (NGX_DARWIN)
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87 #include <ngx_darwin.h>
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88 #endif
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91 #endif /* _NGX_OS_H_INCLUDED_ */