Mercurial > hg > nginx

annotate src/core/ngx_buf.h @ 9230:e14debe728b0 radix_with_skip

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Closed the radix_with_skip branch. The radix_with_skip branch is an archive of an experiment did in 2008, and it is no longer relevant. It is now closed to avoid cluttering of the branches list. If needed, closed branches still can be seen with "hg branches --closed".
author Maxim Dounin <mdounin@mdounin.ru>
date Sat, 23 Mar 2024 04:30:45 +0300
parents 1adec90a0e46
children cc13ff6d5c07
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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_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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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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32 /* the buf's content could be changed */
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33 unsigned temporary:1;
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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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43
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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;
509
9b8c906f6e63 nginx-0.1.29-RELEASE import
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47 unsigned sync:1;
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48 unsigned last_buf:1;
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49 unsigned last_in_chain:1;
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51 unsigned last_shadow:1;
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52 unsigned temp_file:1;
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54 unsigned zerocopy_busy:1;
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55
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56 /* STUB */ int num;
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57 };
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58
61
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59
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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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65
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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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70
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71
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72 typedef ngx_int_t (*ngx_output_chain_filter_pt)(void *ctx, ngx_chain_t *in);
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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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8564129d49b6 *) handle unaligned file part for directio
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81 unsigned directio;
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82 #if (NGX_HAVE_ALIGNED_DIRECTIO)
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83 unsigned unaligned;
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84 #endif
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85 unsigned need_in_memory;
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86 unsigned need_in_temp;
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87
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88 ngx_pool_t *pool;
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89 ngx_int_t allocated;
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90 ngx_bufs_t bufs;
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91 ngx_buf_tag_t tag;
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92
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93 ngx_output_chain_filter_pt output_filter;
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94 void *filter_ctx;
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95 } ngx_output_chain_ctx_t;
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96
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97
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98 typedef struct {
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99 ngx_chain_t *out;
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100 ngx_chain_t **last;
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101 ngx_connection_t *connection;
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102 ngx_pool_t *pool;
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103 off_t limit;
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104 } ngx_chain_writer_ctx_t;
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105
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106
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107 #define NGX_CHAIN_ERROR (ngx_chain_t *) NGX_ERROR
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108
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109
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110 #define ngx_buf_in_memory(b) (b->temporary || b->memory || b->mmap)
6bdf858bff8c nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
Igor Sysoev <igor@sysoev.ru>
parents: 294
diff changeset
111 #define ngx_buf_in_memory_only(b) (ngx_buf_in_memory(b) && !b->in_file)
595
ebc68d8ca496 nginx-0.3.19-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 581
diff changeset
112
343
6bdf858bff8c nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
Igor Sysoev <igor@sysoev.ru>
parents: 294
diff changeset
113 #define ngx_buf_special(b) \
509
9b8c906f6e63 nginx-0.1.29-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 507
diff changeset
114 ((b->flush || b->last_buf || b->sync) \
9b8c906f6e63 nginx-0.1.29-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 507
diff changeset
115 && !ngx_buf_in_memory(b) && !b->in_file)
343
6bdf858bff8c nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
Igor Sysoev <igor@sysoev.ru>
parents: 294
diff changeset
116
595
ebc68d8ca496 nginx-0.3.19-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 581
diff changeset
117 #define ngx_buf_sync_only(b) \
ebc68d8ca496 nginx-0.3.19-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 581
diff changeset
118 (b->sync \
ebc68d8ca496 nginx-0.3.19-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 581
diff changeset
119 && !ngx_buf_in_memory(b) && !b->in_file && !b->flush && !b->last_buf)
ebc68d8ca496 nginx-0.3.19-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 581
diff changeset
120
343
6bdf858bff8c nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
Igor Sysoev <igor@sysoev.ru>
parents: 294
diff changeset
121 #define ngx_buf_size(b) \
499
64d9afb209da nginx-0.1.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 479
diff changeset
122 (ngx_buf_in_memory(b) ? (off_t) (b->last - b->pos): \
64d9afb209da nginx-0.1.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 479
diff changeset
123 (b->file_last - b->file_pos))
343
6bdf858bff8c nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
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parents: 294
diff changeset
124
6bdf858bff8c nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
Igor Sysoev <igor@sysoev.ru>
parents: 294
diff changeset
125 ngx_buf_t *ngx_create_temp_buf(ngx_pool_t *pool, size_t size);
6bdf858bff8c nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
Igor Sysoev <igor@sysoev.ru>
parents: 294
diff changeset
126 ngx_chain_t *ngx_create_chain_of_bufs(ngx_pool_t *pool, ngx_bufs_t *bufs);
8
708f8bb772ec nginx-0.0.1-2002-09-02-18:48:24 import
Igor Sysoev <igor@sysoev.ru>
parents: 7
diff changeset
127
343
6bdf858bff8c nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
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parents: 294
diff changeset
128
6bdf858bff8c nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
Igor Sysoev <igor@sysoev.ru>
parents: 294
diff changeset
129 #define ngx_alloc_buf(pool) ngx_palloc(pool, sizeof(ngx_buf_t))
6bdf858bff8c nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
Igor Sysoev <igor@sysoev.ru>
parents: 294
diff changeset
130 #define ngx_calloc_buf(pool) ngx_pcalloc(pool, sizeof(ngx_buf_t))
75
869b10be682f nginx-0.0.1-2003-04-14-21:04:58 import
Igor Sysoev <igor@sysoev.ru>
parents: 74
diff changeset
131
507
cd3117ad9aab nginx-0.1.28-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 501
diff changeset
132 ngx_chain_t *ngx_alloc_chain_link(ngx_pool_t *pool);
cd3117ad9aab nginx-0.1.28-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 501
diff changeset
133 #define ngx_free_chain(pool, cl) \
cd3117ad9aab nginx-0.1.28-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 501
diff changeset
134 cl->next = pool->chain; \
cd3117ad9aab nginx-0.1.28-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 501
diff changeset
135 pool->chain = cl
cd3117ad9aab nginx-0.1.28-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 501
diff changeset
136
155
46eb23d9471d nginx-0.0.1-2003-10-22-20:38:26 import
Igor Sysoev <igor@sysoev.ru>
parents: 154
diff changeset
137
7
b5481d6fbbd4 nginx-0.0.1-2002-08-29-20:59:54 import
Igor Sysoev <igor@sysoev.ru>
parents: 6
diff changeset
138
356
2e3cbc1bbe3c nginx-0.0.7-2004-06-16-19:32:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 348
diff changeset
139 ngx_int_t ngx_output_chain(ngx_output_chain_ctx_t *ctx, ngx_chain_t *in);
479
c52408583801 nginx-0.1.14-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 473
diff changeset
140 ngx_int_t ngx_chain_writer(void *ctx, ngx_chain_t *in);
162
96993d4d5067 nginx-0.0.1-2003-10-28-00:01:00 import
Igor Sysoev <igor@sysoev.ru>
parents: 160
diff changeset
141
356
2e3cbc1bbe3c nginx-0.0.7-2004-06-16-19:32:11 import
Igor Sysoev <igor@sysoev.ru>
parents: 348
diff changeset
142 ngx_int_t ngx_chain_add_copy(ngx_pool_t *pool, ngx_chain_t **chain,
499
64d9afb209da nginx-0.1.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 479
diff changeset
143 ngx_chain_t *in);
581
326634fb9d47 nginx-0.3.12-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 509
diff changeset
144 ngx_chain_t *ngx_chain_get_free_buf(ngx_pool_t *p, ngx_chain_t **free);
134
d57c6835225c nginx-0.0.1-2003-09-26-09:45:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 130
diff changeset
145 void ngx_chain_update_chains(ngx_chain_t **free, ngx_chain_t **busy,
499
64d9afb209da nginx-0.1.24-RELEASE import
Igor Sysoev <igor@sysoev.ru>
parents: 479
diff changeset
146 ngx_chain_t **out, ngx_buf_tag_t tag);
134
d57c6835225c nginx-0.0.1-2003-09-26-09:45:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 130
diff changeset
147
d57c6835225c nginx-0.0.1-2003-09-26-09:45:21 import
Igor Sysoev <igor@sysoev.ru>
parents: 130
diff changeset
148
343
6bdf858bff8c nginx-0.0.3-2004-05-28-19:49:23 import; rename ngx_hunk_t to ngx_buf_t
Igor Sysoev <igor@sysoev.ru>
parents: 294
diff changeset
149 #endif /* _NGX_BUF_H_INCLUDED_ */