2002-08-07 00:39:45 +08:00
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#ifndef _NGX_CHUNK_H_INCLUDED_
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#define _NGX_CHUNK_H_INCLUDED_
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#include <ngx_config.h>
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#include <ngx_types.h>
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2002-08-20 22:48:28 +08:00
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#include <ngx_file.h>
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2002-08-07 00:39:45 +08:00
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#include <ngx_alloc.h>
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2002-08-16 01:20:26 +08:00
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/* hunk type */
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/* temp means that hunk's content can be changed */
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/* other type means that hunk's content can not be changed */
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2002-08-07 00:39:45 +08:00
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#define NGX_HUNK_TEMP 0x0001
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#define NGX_HUNK_MEMORY 0x0002
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#define NGX_HUNK_MMAP 0x0004
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#define NGX_HUNK_FILE 0x0008
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2002-08-16 01:20:26 +08:00
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/* hunk flags */
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2002-08-07 00:39:45 +08:00
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2002-08-16 01:20:26 +08:00
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/* in thread state flush means to write the hunk completely before return */
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/* in event state flush means to start to write the hunk */
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#define NGX_HUNK_FLUSH 0x0100
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/* last hunk */
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#define NGX_HUNK_LAST 0x0200
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2002-08-07 00:39:45 +08:00
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/* can be used with NGX_HUNK_LAST only */
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2002-08-16 01:20:26 +08:00
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#define NGX_HUNK_SHUTDOWN 0x0400
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#define NGX_HUNK_IN_MEMORY (NGX_HUNK_TEMP|NGX_HUNK_MEMORY|NGX_HUNK_MMAP)
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2002-08-07 00:39:45 +08:00
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typedef struct ngx_hunk_s ngx_hunk_t;
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struct ngx_hunk_s {
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union {
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2002-08-16 01:20:26 +08:00
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char *mem; /* start of current data */
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off_t file;
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2002-08-07 00:39:45 +08:00
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} pos;
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union {
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2002-08-16 01:20:26 +08:00
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char *mem; /* end of current data */
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off_t file;
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2002-08-07 00:39:45 +08:00
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} last;
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int type;
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char *start; /* start of hunk */
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char *end; /* end of hunk */
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char *pre_start; /* start of pre-allocated hunk */
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char *post_end; /* end of post-allocated hunk */
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int tag;
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2002-08-26 23:18:19 +08:00
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ngx_fd_t fd;
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2002-08-07 00:39:45 +08:00
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};
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typedef struct ngx_chain_s ngx_chain_t;
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struct ngx_chain_s {
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ngx_hunk_t *hunk;
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ngx_chain_t *next;
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};
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2002-08-22 23:24:03 +08:00
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#define ngx_add_hunk_to_chain(chain, h, pool, error) \
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do { \
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ngx_test_null(chain, ngx_create_chain_entry(pool), error); \
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chain->hunk = h; \
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chain->next = NULL; \
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} while (0);
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2002-08-07 00:39:45 +08:00
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ngx_hunk_t *ngx_get_hunk(ngx_pool_t *pool, int size, int before, int after);
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#endif /* _NGX_CHUNK_H_INCLUDED_ */
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