Mercurial > hg > nginx
annotate src/core/ngx_hunk.h @ 67:5a7d1aaa1618
nginx-0.0.1-2003-03-11-23:38:13 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Tue, 11 Mar 2003 20:38:13 +0000 |
parents | 4f3e2abcc2c4 |
children | 4534060fde92 |
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1 #ifndef _NGX_CHUNK_H_INCLUDED_ |
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2 #define _NGX_CHUNK_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_types.h> |
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7 #include <ngx_file.h> |
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8 #include <ngx_alloc.h> |
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9 |
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11 /* hunk type */ |
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13 /* the hunk is in memory */ |
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14 #define NGX_HUNK_IN_MEMORY 0x0001 |
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15 /* the hunk's content can be changed */ |
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16 #define NGX_HUNK_TEMP 0x0002 |
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17 /* the hunk's content is in cache and can not be changed */ |
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18 #define NGX_HUNK_MEMORY 0x0004 |
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19 /* the hunk's content is mmap()ed and can not be changed */ |
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20 #define NGX_HUNK_MMAP 0x0008 |
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21 |
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22 #define NGX_HUNK_RECYCLED 0x0010 |
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23 |
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24 /* the hunk is in file */ |
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25 #define NGX_HUNK_FILE 0x0100 |
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26 |
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27 /* hunk flags */ |
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29 /* in thread state flush means to write the hunk completely before return */ |
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30 /* in event state flush means to start to write the hunk */ |
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31 #define NGX_HUNK_FLUSH 0x1000 |
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32 /* last hunk */ |
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33 #define NGX_HUNK_LAST 0x2000 |
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38 typedef struct ngx_hunk_s ngx_hunk_t; |
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39 struct ngx_hunk_s { |
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40 #if 0 |
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41 union { |
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42 char *mem; /* start of current data */ |
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43 off_t file; |
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44 } pos; |
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45 union { |
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46 char *mem; /* end of current data */ |
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47 off_t file; |
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48 } last; |
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49 #endif |
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50 |
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51 char *pos; |
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52 char *last; |
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53 off_t file_pos; |
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54 off_t file_last; |
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55 |
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56 int type; |
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57 char *start; /* start of hunk */ |
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58 char *end; /* end of hunk */ |
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59 char *pre_start; /* start of pre-allocated hunk */ |
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60 char *post_end; /* end of post-allocated hunk */ |
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61 int tag; |
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62 ngx_file_t *file; |
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63 }; |
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65 |
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67 typedef struct ngx_chain_s ngx_chain_t; |
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68 struct ngx_chain_s { |
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69 ngx_hunk_t *hunk; |
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70 ngx_chain_t *next; |
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71 }; |
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72 |
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74 #define NGX_CHAIN_ERROR (ngx_chain_t *) NGX_ERROR |
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75 |
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77 #define ngx_hunk_in_memory_only(h) \ |
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78 ((h->type & (NGX_HUNK_IN_MEMORY|NGX_HUNK_FILE)) == NGX_HUNK_IN_MEMORY) |
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79 |
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81 ngx_hunk_t *ngx_create_temp_hunk(ngx_pool_t *pool, int size, |
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82 int before, int after); |
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83 |
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84 #define ngx_create_chain_entry(pool) ngx_palloc(pool, sizeof(ngx_chain_t)) |
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86 #define ngx_add_hunk_to_chain(chain, h, pool, error) \ |
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87 do { \ |
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88 ngx_test_null(chain, ngx_create_chain_entry(pool), error); \ |
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89 chain->hunk = h; \ |
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90 chain->next = NULL; \ |
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91 } while (0); |
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92 |
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96 |
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97 |
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98 #endif /* _NGX_CHUNK_H_INCLUDED_ */ |