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annotate src/core/ngx_hunk.h @ 0:4eff17414a43

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nginx-0.0.1-2002-08-06-20:39:45 import The first code that uses "ngx_" prefix, the previous one used "gx_" prefix. At that point the code is not yet usable. The first draft ideas are dated back to 23.10.2001.
author Igor Sysoev <igor@sysoev.ru>
date Tue, 06 Aug 2002 16:39:45 +0000
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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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5 #include <ngx_config.h>
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6 #include <ngx_types.h>
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7 #include <ngx_alloc.h>
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10 /* type */
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11 #define NGX_HUNK_TEMP 0x0001
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12 #define NGX_HUNK_MEMORY 0x0002
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13 #define NGX_HUNK_MMAP 0x0004
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14 #define NGX_HUNK_FILE 0x0008
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15 #define NGX_HUNK_FLUSH 0x0010
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16 /* in thread state flush means to write the hunk completely before return
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17 in event-driven state flush means to start to write the hunk */
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18 #define NGX_HUNK_LAST 0x0020
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20 #define NGX_HUNK_IN_MEMORY (NGX_HUNK_TEMP | NGX_HUNK_MEMORY | NGX_HUNK_MMAP )
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21 #define NGX_HUNK_TYPE 0x0ffff
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23 /* flags */
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24 #define NGX_HUNK_SHUTDOWN 0x10000
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25 /* can be used with NGX_HUNK_LAST only */
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28 typedef struct ngx_hunk_s ngx_hunk_t;
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29 struct ngx_hunk_s {
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30 union {
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31 char *p; /* start of current data */
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32 off_t f;
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33 } pos;
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34 union {
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35 char *p; /* end of current data */
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36 off_t f;
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37 } last;
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38 int type;
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39 char *start; /* start of hunk */
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40 char *end; /* end of hunk */
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41 char *pre_start; /* start of pre-allocated hunk */
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42 char *post_end; /* end of post-allocated hunk */
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43 int tag;
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44 ngx_file_t fd;
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45 };
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47 typedef struct ngx_chain_s ngx_chain_t;
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48 struct ngx_chain_s {
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49 ngx_hunk_t *hunk;
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50 ngx_chain_t *next;
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51 };
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54 ngx_hunk_t *ngx_get_hunk(ngx_pool_t *pool, int size, int before, int after);
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57 #endif /* _NGX_CHUNK_H_INCLUDED_ */