Mercurial > hg > nginx
annotate src/core/ngx_hunk.h @ 66:4876cd4a36bb
nginx-0.0.1-2003-03-05-20:30:51 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Wed, 05 Mar 2003 17:30:51 +0000 |
parents | 4f3e2abcc2c4 |
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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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12 |
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13 /* temp means that hunk's content can be changed */ |
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14 /* other type means that hunk's content can not be changed */ |
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15 #define NGX_HUNK_TEMP 0x0001 |
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16 #define NGX_HUNK_MEMORY 0x0002 |
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17 #define NGX_HUNK_MMAP 0x0004 |
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18 #define NGX_HUNK_FILE 0x0008 |
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19 |
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20 /* hunk flags */ |
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22 /* in thread state flush means to write the hunk completely before return */ |
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23 /* in event state flush means to start to write the hunk */ |
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24 #define NGX_HUNK_FLUSH 0x0100 |
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25 /* last hunk */ |
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26 #define NGX_HUNK_LAST 0x0200 |
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27 #if 0 |
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28 /* can be used with NGX_HUNK_LAST only */ |
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29 #define NGX_HUNK_SHUTDOWN 0x0400 / |
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30 #endif |
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32 #define NGX_HUNK_RECYCLED 0x0800 |
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35 #define NGX_HUNK_IN_MEMORY (NGX_HUNK_TEMP|NGX_HUNK_MEMORY|NGX_HUNK_MMAP) |
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37 |
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39 typedef struct ngx_hunk_s ngx_hunk_t; |
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40 struct ngx_hunk_s { |
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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 int type; |
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50 char *start; /* start of hunk */ |
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51 char *end; /* end of hunk */ |
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52 char *pre_start; /* start of pre-allocated hunk */ |
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53 char *post_end; /* end of post-allocated hunk */ |
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54 int tag; |
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55 ngx_file_t *file; |
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56 }; |
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60 typedef struct ngx_chain_s ngx_chain_t; |
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61 struct ngx_chain_s { |
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62 ngx_hunk_t *hunk; |
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63 ngx_chain_t *next; |
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64 }; |
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67 #define NGX_CHAIN_ERROR (ngx_chain_t *) NGX_ERROR |
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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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72 |
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73 #define ngx_create_chain_entry(pool) ngx_palloc(pool, sizeof(ngx_chain_t)) |
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75 #define ngx_add_hunk_to_chain(chain, h, pool, error) \ |
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76 do { \ |
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77 ngx_test_null(chain, ngx_create_chain_entry(pool), error); \ |
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78 chain->hunk = h; \ |
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79 chain->next = NULL; \ |
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80 } while (0); |
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81 |
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87 #endif /* _NGX_CHUNK_H_INCLUDED_ */ |