annotate src/core/ngx_shmtx.h @ 506:b9fdcaf2062b NGINX_0_7_65

nginx 0.7.65 *) Security: now nginx/Windows ignores trailing spaces in URI. Thanks to Dan Crowley, Core Security Technologies. *) Security: now nginx/Windows ignores short files names. Thanks to Dan Crowley, Core Security Technologies. *) Change: now the "009" status code is written to an access log for proxied HTTP/0.9 responses. *) Change: now the default buffer size of the "large_client_header_buffers" directive is 8K. Thanks to Andrew Cholakian. *) Change: now default SSL ciphers are "HIGH:!ADH:!MD5". *) Change: now SSLv2 protocol is disabled by default. *) Change: now $host variable value is always low case. *) Feature: the conf/fastcgi.conf for simple FastCGI configurations. *) Feature: now URI part is not required a "proxy_pass" directive if variables are used. *) Feature: the $ssl_session_id variable. *) Bugfix: if a proxied or FastCGI request was internally redirected to another proxied or FastCGI location, then $upstream_response_time variable may have abnormally large value; the bug had appeared in 0.7.63. *) Bugfix: if the "expires modified" set date in the past, then a negative number was set in the "Cache-Control" response header line. Thanks to Alex Kapranoff. *) Bugfix: nginx closed a connection if a cached response had an empty body. Thanks to Piotr Sikora. *) Bugfix: nginx cached a 304 response if there was the "If-None-Match" header line in a proxied request. Thanks to Tim Dettrick and David Kostal. *) Bugfix: nginx did not treat a comma as separator in the "Cache-Control" backend response header line. *) Bugfix: cached HTTP/0.9 responses were handled incorrectly. *) Bugfix: nginx sent gzipped responses to clients those do not support gzip, if "gzip_static on" and "gzip_vary off"; the bug had appeared in 0.8.16. *) Bugfix: nginx always added "Content-Encoding: gzip" response header line in 304 responses sent by ngx_http_gzip_static_module. *) Bugfix: the "!-x" operator did not work. Thanks to Maxim Dounin. *) Bugfix: a segmentation fault might occur in a worker process, if limit_rate was used in HTTPS server. Thanks to Maxim Dounin. *) Bugfix: a segmentation fault might occur in a worker process while $limit_rate logging. Thanks to Maxim Dounin. *) Bugfix: nginx did not support dates in 2038 year on 32-bit platforms; *) Bugfix: nginx/Windows tried to delete a temporary file twice if the file should replace an already existent file. *) Bugfix: nginx/Windows tried to rename a temporary file twice if the file should replace an already existent file. *) Bugfix: nginx/Windows might not create temporary file, a cache file, or "proxy/fastcgi_store"d file if a worker had no enough access rights for top level directories. *) Bugfix: in UTF-8 encoding support by "try_files" directive in nginx/Windows. *) Bugfix: UTF-8 encoding usage in the ngx_http_autoindex_module. Thanks to Maxim Dounin. *) Bugfix: the ngx_http_autoindex_module did not show the trailing slash in links to a directory; the bug had appeared in 0.7.15. *) Bugfix: nginx did not close a log file set by the --error-log-path configuration option; the bug had appeared in 0.7.53. *) Bugfix: "addition_types" directive was incorrectly named "addtion_types". *) Bugfix: invalid request line in $request variable was written in access_log only if error_log was set to "info" or "debug" level.
author Igor Sysoev <http://sysoev.ru>
date Mon, 01 Feb 2010 00:00:00 +0000
parents bb941a2996a6
children
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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6
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7 #ifndef _NGX_SHMTX_H_INCLUDED_
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8 #define _NGX_SHMTX_H_INCLUDED_
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9
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10
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11 #include <ngx_config.h>
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12 #include <ngx_core.h>
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13
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15 typedef struct {
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16 #if (NGX_HAVE_ATOMIC_OPS)
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17 ngx_atomic_t *lock;
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18 #else
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19 ngx_fd_t fd;
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20 u_char *name;
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21 #endif
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22 } ngx_shmtx_t;
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25 ngx_int_t ngx_shmtx_create(ngx_shmtx_t *mtx, void *addr, u_char *name);
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28 #if (NGX_HAVE_ATOMIC_OPS)
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30 static ngx_inline ngx_uint_t
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31 ngx_shmtx_trylock(ngx_shmtx_t *mtx)
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32 {
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33 return (*mtx->lock == 0 && ngx_atomic_cmp_set(mtx->lock, 0, ngx_pid));
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34 }
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36 #define ngx_shmtx_lock(mtx) ngx_spinlock((mtx)->lock, ngx_pid, 1024)
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38 #define ngx_shmtx_unlock(mtx) (void) ngx_atomic_cmp_set((mtx)->lock, ngx_pid, 0)
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39
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40 #define ngx_shmtx_destory(mtx)
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43 #else
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44
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45 static ngx_inline ngx_uint_t
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46 ngx_shmtx_trylock(ngx_shmtx_t *mtx)
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47 {
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48 ngx_err_t err;
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49
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50 err = ngx_trylock_fd(mtx->fd);
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51
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52 if (err == 0) {
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53 return 1;
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54 }
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55
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56 if (err == NGX_EAGAIN) {
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57 return 0;
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58 }
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60 #if __osf__ /* Tru64 UNIX */
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61
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62 if (err == NGX_EACCESS) {
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63 return 0;
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64 }
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65
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66 #endif
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67
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68 ngx_log_abort(err, ngx_trylock_fd_n " %s failed", mtx->name);
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70 return 0;
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71 }
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74 static ngx_inline void
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75 ngx_shmtx_lock(ngx_shmtx_t *mtx)
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76 {
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77 ngx_err_t err;
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78
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79 err = ngx_lock_fd(mtx->fd);
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80
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81 if (err == 0) {
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82 return;
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83 }
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85 ngx_log_abort(err, ngx_lock_fd_n " %s failed", mtx->name);
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86 }
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89 static ngx_inline void
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90 ngx_shmtx_unlock(ngx_shmtx_t *mtx)
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91 {
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92 ngx_err_t err;
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93
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94 err = ngx_unlock_fd(mtx->fd);
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95
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96 if (err == 0) {
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97 return;
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98 }
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99
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100 ngx_log_abort(err, ngx_unlock_fd_n " %s failed", mtx->name);
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101 }
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102
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103
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104 void ngx_shmtx_destory(ngx_shmtx_t *mtx);
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105
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106 #endif
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108
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109 #endif /* _NGX_SHMTX_H_INCLUDED_ */