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annotate src/core/ngx_hunk.h @ 141:656d468f4ead

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nginx-0.0.1-2003-10-08-19:32:54 import
author Igor Sysoev <igor@sysoev.ru>
date Wed, 08 Oct 2003 15:32:54 +0000
parents d57c6835225c
children cb77c084acdb
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7ebc8b7fb816 nginx-0.0.1-2003-06-03-19:42:58 import
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1 #ifndef _NGX_HUNK_H_INCLUDED_
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2 #define _NGX_HUNK_H_INCLUDED_
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5 #include <ngx_config.h>
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6 #include <ngx_core.h>
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d220029ac7f3 nginx-0.0.1-2002-08-15-21:20:26 import
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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 #define NGX_HUNK_STORAGE (NGX_HUNK_IN_MEMORY \
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26 |NGX_HUNK_TEMP|NGX_HUNK_MEMORY|NGX_HUNK_MMAP \
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27 |NGX_HUNK_RECYCLED|NGX_HUNK_FILE)
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29 /* hunk flags */
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31 /* in thread state flush means to write the hunk completely before return */
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32 /* in event state flush means to start to write the hunk */
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33 #define NGX_HUNK_FLUSH 0x1000
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34 /* last hunk */
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35 #define NGX_HUNK_LAST 0x2000
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36 #define NGX_HUNK_LAST_SHADOW 0x4000
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40 typedef struct ngx_hunk_s ngx_hunk_t;
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42 struct ngx_hunk_s {
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43 char *pos;
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44 char *last;
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45 off_t file_pos;
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46 off_t file_last;
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47
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48 int type;
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
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49 char *start; /* start of hunk */
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
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50 char *end; /* end of hunk */
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
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51 char *pre_start; /* start of pre-allocated hunk */
4eff17414a43 nginx-0.0.1-2002-08-06-20:39:45 import
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52 char *post_end; /* end of post-allocated hunk */
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53 int tag;
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54 ngx_file_t *file;
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55 ngx_hunk_t *shadow;
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56 };
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59 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 typedef struct {
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68 int num;
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69 ssize_t size;
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70 } ngx_bufs_t;
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73 #define NGX_CHAIN_ERROR (ngx_chain_t *) NGX_ERROR
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76 #define ngx_hunk_in_memory_only(h) \
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77 ((h->type & (NGX_HUNK_IN_MEMORY|NGX_HUNK_FILE)) == NGX_HUNK_IN_MEMORY)
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80 ngx_hunk_t *ngx_create_temp_hunk(ngx_pool_t *pool, int size,
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81 int before, int after);
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83 #define ngx_alloc_hunk(pool) ngx_palloc(pool, sizeof(ngx_hunk_t))
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84 #define ngx_calloc_hunk(pool) ngx_pcalloc(pool, sizeof(ngx_hunk_t))
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86 #define ngx_alloc_chain_entry(pool) ngx_palloc(pool, sizeof(ngx_chain_t))
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88 #define ngx_add_hunk_to_chain(chain, h, pool, error) \
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89 do { \
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90 ngx_test_null(chain, ngx_alloc_chain_entry(pool), error); \
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91 chain->hunk = h; \
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92 chain->next = NULL; \
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93 } while (0);
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95 int ngx_chain_add_copy(ngx_pool_t *pool, ngx_chain_t **ch, ngx_chain_t *in);
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96 void ngx_chain_update_chains(ngx_chain_t **free, ngx_chain_t **busy,
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97 ngx_chain_t **out);
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98
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101 #endif /* _NGX_HUNK_H_INCLUDED_ */