Mercurial > hg > nginx
view src/core/ngx_hunk.c @ 8:708f8bb772ec
nginx-0.0.1-2002-09-02-18:48:24 import
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Mon, 02 Sep 2002 14:48:24 +0000 |
parents | 669801705ab1 |
children | 6ce4755737b4 |
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#include <ngx_hunk.h> ngx_hunk_t *ngx_create_temp_hunk(ngx_pool_t *pool, int size, int before, int after) { ngx_hunk_t *h = ngx_palloc(pool, sizeof(ngx_hunk_t)); #if !(HAVE_OFFSET_EQUAL_PTR) h->pos.file = h->last.file = 0; #endif h->pre_start = ngx_palloc(pool, size + before + after); h->start = h->pos.mem = h->last.mem = h->pre_start + before; h->end = h->last.mem + size; h->post_end = h->end + after; h->type = NGX_HUNK_TEMP; h->tag = 0; h->file = NULL; return h; } ngx_hunk_t *ngx_create_hunk_before(ngx_pool_t *pool, ngx_hunk_t *hunk, int size) { ngx_hunk_t *h = ngx_palloc(pool, sizeof(ngx_hunk_t)); #if !(HAVE_OFFSET_EQUAL_PTR) h->pos.file = h->last.file = 0; #endif if (hunk->type & NGX_HUNK_TEMP && hunk->pos.mem - hunk->pre_start >= size) { /* keep hunk->start unchanged - used in restore */ h->pre_start = hunk->pre_start; h->end = h->post_end = hunk->pre_start = hunk->pos.mem; h->start = h->pos.mem = h->last.mem = h->end - size; h->type = NGX_HUNK_TEMP; h->tag = 0; h->file = NULL; } else { h->pre_start = h->start = h->pos.mem = h->last.mem = ngx_palloc(pool, size); h->end = h->post_end = h->start + size; h->type = NGX_HUNK_TEMP; h->tag = 0; h->file = NULL; } return h; } ngx_hunk_t *ngx_create_hunk_after(ngx_pool_t *pool, ngx_hunk_t *hunk, int size) { ngx_hunk_t *h = ngx_palloc(pool, sizeof(ngx_hunk_t)); #if !(HAVE_OFFSET_EQUAL_PTR) h->pos.file = h->last.file = 0; #endif if (hunk->type & NGX_HUNK_TEMP && hunk->last.mem == hunk->end && hunk->post_end - hunk->end >= size) { h->post_end = hunk->post_end; h->pre_start = h->start = h->pos.mem = h->last.mem = hunk->post_end = hunk->last.mem; h->type = NGX_HUNK_TEMP; h->tag = 0; h->file = NULL; } else { h->pre_start = h->start = h->pos.mem = h->last.mem = ngx_palloc(pool, size); h->end = h->post_end = h->start + size; h->type = NGX_HUNK_TEMP; h->tag = 0; h->file = NULL; } return h; }