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annotate src/core/ngx_hunk.h @ 76:6127d7075471

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nginx-0.0.1-2003-04-15-19:06:52 import
author Igor Sysoev <igor@sysoev.ru>
date Tue, 15 Apr 2003 15:06:52 +0000
parents 869b10be682f
children a059e1aa65d4
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4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
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1 #ifndef _NGX_CHUNK_H_INCLUDED_
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2 #define _NGX_CHUNK_H_INCLUDED_
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4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
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5 #include <ngx_config.h>
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6 #include <ngx_types.h>
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34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import
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7 #include <ngx_file.h>
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8 #include <ngx_alloc.h>
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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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22 #define NGX_HUNK_RECYCLED 0x0010
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24 /* the hunk is in file */
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25 #define NGX_HUNK_FILE 0x0100
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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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34 #define NGX_HUNK_LAST_SHADOW 0x4000
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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 char *pos;
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41 char *last;
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42 off_t file_pos;
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43 off_t file_last;
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45 int type;
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46 char *start; /* start of hunk */
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47 char *end; /* end of hunk */
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48 char *pre_start; /* start of pre-allocated hunk */
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49 char *post_end; /* end of post-allocated hunk */
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50 int tag;
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51 ngx_file_t *file;
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52 ngx_hunk_t *shadow;
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53 };
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56 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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72
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73 #define ngx_alloc_hunk(pool) ngx_palloc(pool, sizeof(ngx_hunk_t))
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74 #define ngx_alloc_chain_entry(pool) ngx_palloc(pool, sizeof(ngx_chain_t))
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76 /* STUB */
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77 #define ngx_create_chain_entry(pool) ngx_palloc(pool, sizeof(ngx_chain_t))
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78 /**/
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80 #define ngx_add_hunk_to_chain(chain, h, pool, error) \
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81 do { \
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82 ngx_test_null(chain, ngx_alloc_chain_entry(pool), error); \
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83 chain->hunk = h; \
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84 chain->next = NULL; \
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85 } while (0);
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87
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88 #endif /* _NGX_CHUNK_H_INCLUDED_ */