Mercurial > hg > nginx
annotate src/core/ngx_buf.h @ 473:8e8f3af115b5 release-0.1.11
nginx-0.1.11-RELEASE import
*) Feature: the worker_priority directive.
*) Change: both tcp_nopush and tcp_nodelay directives affect the
transferred response.
*) Bugfix: nginx did not call initgroups().
Thanks to Andrew Sitnikov and Andrei Nigmatulin.
*) Change: now the ngx_http_autoindex_module shows the file size in the
bytes.
*) Bugfix: the ngx_http_autoindex_module returned the 500 error if the
broken symlink was in a directory.
*) Bugfix: the files bigger than 4G could not be transferred using
sendfile.
*) Bugfix: if the backend was resolved to several backends and there
was an error while the response waiting then process may got caught
in an endless loop.
*) Bugfix: the worker process may exit with the "unknown cycle" message
when the /dev/poll method was used.
*) Bugfix: "close() channel failed" errors.
*) Bugfix: the autodetection of the "nobody" and "nogroup" groups.
*) Bugfix: the send_lowat directive did not work on Linux.
*) Bugfix: the segmentation fault occurred if there was no events
section in configuration.
*) Bugfix: nginx could not be built on OpenBSD.
*) Bugfix: the double slashes in "://" in the URI were converted to
":/".
author | Igor Sysoev <igor@sysoev.ru> |
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date | Thu, 02 Dec 2004 18:40:46 +0000 |
parents | 295d97d70c69 |
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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_BUF_H_INCLUDED_ |
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8 #define _NGX_BUF_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 typedef void * ngx_buf_tag_t; |
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17 typedef struct ngx_buf_s ngx_buf_t; |
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19 struct ngx_buf_s { |
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20 u_char *pos; |
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21 u_char *last; |
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22 off_t file_pos; |
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23 off_t file_last; |
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24 |
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25 u_char *start; /* start of buffer */ |
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26 u_char *end; /* end of buffer */ |
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27 ngx_buf_tag_t tag; |
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28 ngx_file_t *file; |
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29 ngx_buf_t *shadow; |
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30 |
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32 /* the buf's content could be changed */ |
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33 unsigned temporary:1; |
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34 |
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35 /* |
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36 * the buf's content is in a memory cache or in a read only memory |
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37 * and must not be changed |
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38 */ |
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39 unsigned memory:1; |
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40 |
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41 /* the buf's content is mmap()ed and must not be changed */ |
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42 unsigned mmap:1; |
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44 unsigned recycled:1; |
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45 unsigned in_file:1; |
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46 unsigned flush:1; |
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47 unsigned last_buf:1; |
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48 |
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49 unsigned last_shadow:1; |
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50 unsigned temp_file:1; |
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51 |
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52 unsigned zerocopy_busy:1; |
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53 |
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54 /* STUB */ int num; |
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55 }; |
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58 typedef struct ngx_chain_s ngx_chain_t; |
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60 struct ngx_chain_s { |
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61 ngx_buf_t *buf; |
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62 ngx_chain_t *next; |
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63 }; |
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66 typedef struct { |
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67 ngx_int_t num; |
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68 size_t size; |
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69 } ngx_bufs_t; |
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72 typedef int (*ngx_output_chain_filter_pt)(void *ctx, ngx_chain_t *out); |
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73 |
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74 typedef struct { |
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75 ngx_buf_t *buf; |
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76 ngx_chain_t *in; |
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77 ngx_chain_t *free; |
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78 ngx_chain_t *busy; |
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79 |
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80 unsigned sendfile; |
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81 unsigned need_in_memory; |
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82 unsigned need_in_temp; |
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83 |
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84 ngx_pool_t *pool; |
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85 ngx_int_t allocated; |
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86 ngx_bufs_t bufs; |
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87 ngx_buf_tag_t tag; |
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88 |
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89 ngx_output_chain_filter_pt output_filter; |
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90 void *filter_ctx; |
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91 } ngx_output_chain_ctx_t; |
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92 |
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93 |
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94 typedef struct { |
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95 ngx_chain_t *out; |
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96 ngx_chain_t **last; |
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97 ngx_connection_t *connection; |
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98 ngx_pool_t *pool; |
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99 off_t limit; |
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100 } ngx_chain_writer_ctx_t; |
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101 |
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102 |
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103 #define NGX_CHAIN_ERROR (ngx_chain_t *) NGX_ERROR |
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104 |
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105 |
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106 #define ngx_buf_in_memory(b) (b->temporary || b->memory || b->mmap) |
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107 #define ngx_buf_in_memory_only(b) (ngx_buf_in_memory(b) && !b->in_file) |
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108 #define ngx_buf_special(b) \ |
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109 ((b->flush || b->last_buf) && !ngx_buf_in_memory(b) && !b->in_file) |
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110 |
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111 #define ngx_buf_size(b) \ |
473 | 112 (ngx_buf_in_memory(b) ? (off_t) (b->last - b->pos): \ |
113 (b->file_last - b->file_pos)) | |
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114 |
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115 ngx_buf_t *ngx_create_temp_buf(ngx_pool_t *pool, size_t size); |
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116 ngx_chain_t *ngx_create_chain_of_bufs(ngx_pool_t *pool, ngx_bufs_t *bufs); |
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117 |
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118 |
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119 #define ngx_alloc_buf(pool) ngx_palloc(pool, sizeof(ngx_buf_t)) |
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120 #define ngx_calloc_buf(pool) ngx_pcalloc(pool, sizeof(ngx_buf_t)) |
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121 |
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122 |
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123 #define ngx_alloc_chain_link(pool) ngx_palloc(pool, sizeof(ngx_chain_t)) |
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124 |
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125 |
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126 #define ngx_alloc_link_and_set_buf(chain, b, pool, error) \ |
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127 do { \ |
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128 ngx_test_null(chain, ngx_alloc_chain_link(pool), error); \ |
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129 chain->buf = b; \ |
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130 chain->next = NULL; \ |
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131 } while (0); |
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132 |
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133 |
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134 #define ngx_chain_add_link(chain, last, cl) \ |
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135 if (chain) { \ |
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136 *last = cl; \ |
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137 } else { \ |
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138 chain = cl; \ |
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139 } \ |
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140 last = &cl->next |
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141 |
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142 |
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143 ngx_int_t ngx_output_chain(ngx_output_chain_ctx_t *ctx, ngx_chain_t *in); |
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144 ngx_int_t ngx_chain_writer(void *data, ngx_chain_t *in); |
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145 |
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146 ngx_int_t ngx_chain_add_copy(ngx_pool_t *pool, ngx_chain_t **chain, |
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147 ngx_chain_t *in); |
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148 void ngx_chain_update_chains(ngx_chain_t **free, ngx_chain_t **busy, |
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149 ngx_chain_t **out, ngx_buf_tag_t tag); |
134
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150 |
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151 |
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152 #endif /* _NGX_BUF_H_INCLUDED_ */ |