Mercurial > hg > nginx
annotate src/core/ngx_hunk.h @ 100:7ebc8b7fb816
nginx-0.0.1-2003-06-03-19:42:58 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Tue, 03 Jun 2003 15:42:58 +0000 |
parents | a059e1aa65d4 |
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1 #ifndef _NGX_HUNK_H_INCLUDED_ |
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2 #define _NGX_HUNK_H_INCLUDED_ |
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3 |
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4 |
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5 #include <ngx_config.h> |
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6 #include <ngx_core.h> |
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9 /* hunk type */ |
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11 /* the hunk is in memory */ |
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12 #define NGX_HUNK_IN_MEMORY 0x0001 |
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13 /* the hunk's content can be changed */ |
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14 #define NGX_HUNK_TEMP 0x0002 |
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15 /* the hunk's content is in cache and can not be changed */ |
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16 #define NGX_HUNK_MEMORY 0x0004 |
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17 /* the hunk's content is mmap()ed and can not be changed */ |
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18 #define NGX_HUNK_MMAP 0x0008 |
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20 #define NGX_HUNK_RECYCLED 0x0010 |
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22 /* the hunk is in file */ |
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23 #define NGX_HUNK_FILE 0x0100 |
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25 /* hunk flags */ |
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27 /* in thread state flush means to write the hunk completely before return */ |
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28 /* in event state flush means to start to write the hunk */ |
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29 #define NGX_HUNK_FLUSH 0x1000 |
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30 /* last hunk */ |
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31 #define NGX_HUNK_LAST 0x2000 |
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32 #define NGX_HUNK_LAST_SHADOW 0x4000 |
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36 typedef struct ngx_hunk_s ngx_hunk_t; |
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38 struct ngx_hunk_s { |
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39 char *pos; |
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40 char *last; |
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41 off_t file_pos; |
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42 off_t file_last; |
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44 int type; |
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45 char *start; /* start of hunk */ |
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46 char *end; /* end of hunk */ |
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47 char *pre_start; /* start of pre-allocated hunk */ |
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48 char *post_end; /* end of post-allocated hunk */ |
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49 int tag; |
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50 ngx_file_t *file; |
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51 ngx_hunk_t *shadow; |
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52 }; |
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55 typedef struct ngx_chain_s ngx_chain_t; |
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57 struct ngx_chain_s { |
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58 ngx_hunk_t *hunk; |
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59 ngx_chain_t *next; |
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60 }; |
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63 #define NGX_CHAIN_ERROR (ngx_chain_t *) NGX_ERROR |
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66 #define ngx_hunk_in_memory_only(h) \ |
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67 ((h->type & (NGX_HUNK_IN_MEMORY|NGX_HUNK_FILE)) == NGX_HUNK_IN_MEMORY) |
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70 ngx_hunk_t *ngx_create_temp_hunk(ngx_pool_t *pool, int size, |
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71 int before, int after); |
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73 #define ngx_alloc_hunk(pool) ngx_palloc(pool, sizeof(ngx_hunk_t)) |
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74 #define ngx_calloc_hunk(pool) ngx_pcalloc(pool, sizeof(ngx_hunk_t)) |
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76 #define ngx_alloc_chain_entry(pool) ngx_palloc(pool, sizeof(ngx_chain_t)) |
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78 #define ngx_add_hunk_to_chain(chain, h, pool, error) \ |
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79 do { \ |
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80 ngx_test_null(chain, ngx_alloc_chain_entry(pool), error); \ |
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81 chain->hunk = h; \ |
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82 chain->next = NULL; \ |
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83 } while (0); |
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84 |
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86 #endif /* _NGX_HUNK_H_INCLUDED_ */ |