Mercurial > hg > nginx-quic
view src/core/ngx_hunk.h @ 144:ef8c87afcfc5
nginx-0.0.1-2003-10-12-20:49:16 import
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Sun, 12 Oct 2003 16:49:16 +0000 |
parents | cb77c084acdb |
children | 58557d0cccd1 |
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#ifndef _NGX_HUNK_H_INCLUDED_ #define _NGX_HUNK_H_INCLUDED_ #include <ngx_config.h> #include <ngx_core.h> /* hunk type */ /* the hunk is in memory */ #define NGX_HUNK_IN_MEMORY 0x0001 /* the hunk's content can be changed */ #define NGX_HUNK_TEMP 0x0002 /* the hunk's content is in cache and can not be changed */ #define NGX_HUNK_MEMORY 0x0004 /* the hunk's content is mmap()ed and can not be changed */ #define NGX_HUNK_MMAP 0x0008 #define NGX_HUNK_RECYCLED 0x0010 /* the hunk is in file */ #define NGX_HUNK_FILE 0x0100 #define NGX_HUNK_STORAGE (NGX_HUNK_IN_MEMORY \ |NGX_HUNK_TEMP|NGX_HUNK_MEMORY|NGX_HUNK_MMAP \ |NGX_HUNK_RECYCLED|NGX_HUNK_FILE) /* hunk flags */ /* in thread state flush means to write the hunk completely before return */ /* in event state flush means to start to write the hunk */ #define NGX_HUNK_FLUSH 0x1000 /* last hunk */ #define NGX_HUNK_LAST 0x2000 #define NGX_HUNK_LAST_SHADOW 0x4000 typedef struct ngx_hunk_s ngx_hunk_t; struct ngx_hunk_s { char *pos; char *last; off_t file_pos; off_t file_last; int type; char *start; /* start of hunk */ char *end; /* end of hunk */ char *pre_start; /* start of pre-allocated hunk */ char *post_end; /* end of post-allocated hunk */ int tag; ngx_file_t *file; ngx_hunk_t *shadow; }; typedef struct ngx_chain_s ngx_chain_t; struct ngx_chain_s { ngx_hunk_t *hunk; ngx_chain_t *next; }; typedef struct { int num; ssize_t size; } ngx_bufs_t; #define NGX_CHAIN_ERROR (ngx_chain_t *) NGX_ERROR #define ngx_hunk_in_memory_only(h) \ ((h->type & (NGX_HUNK_IN_MEMORY|NGX_HUNK_FILE)) == NGX_HUNK_IN_MEMORY) /* ((h->type & (NGX_HUNK_TEMP|NGX_HUNK_MEMORY|NGX_HUNK_MMAP|NGX_HUNK_FILE)) \ == (h->type & (NGX_HUNK_TEMP|NGX_HUNK_MEMORY|NGX_HUNK_MMAP))) */ #define ngx_hunk_special(h) \ (h->type == (h->type & (NGX_HUNK_FLUSH|NGX_HUNK_LAST))) ngx_hunk_t *ngx_create_temp_hunk(ngx_pool_t *pool, int size, int before, int after); #define ngx_alloc_hunk(pool) ngx_palloc(pool, sizeof(ngx_hunk_t)) #define ngx_calloc_hunk(pool) ngx_pcalloc(pool, sizeof(ngx_hunk_t)) #define ngx_alloc_chain_entry(pool) ngx_palloc(pool, sizeof(ngx_chain_t)) #define ngx_add_hunk_to_chain(chain, h, pool, error) \ do { \ ngx_test_null(chain, ngx_alloc_chain_entry(pool), error); \ chain->hunk = h; \ chain->next = NULL; \ } while (0); int ngx_chain_add_copy(ngx_pool_t *pool, ngx_chain_t **ch, ngx_chain_t *in); void ngx_chain_update_chains(ngx_chain_t **free, ngx_chain_t **busy, ngx_chain_t **out); #endif /* _NGX_HUNK_H_INCLUDED_ */