#include ngx_hunk_t *ngx_create_temp_hunk(ngx_pool_t *pool, int size, int before, int after) { ngx_hunk_t *h; ngx_test_null(h, ngx_palloc(pool, sizeof(ngx_hunk_t)), NULL); #if !(HAVE_OFFSET_EQUAL_PTR) h->pos.file = h->last.file = 0; #endif ngx_test_null(h->pre_start, ngx_palloc(pool, size + before + after), NULL); 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_test_null(h, ngx_palloc(pool, sizeof(ngx_hunk_t)), NULL); #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 { ngx_test_null(h->pre_start, ngx_palloc(pool, size), NULL); h->start = h->pos.mem = h->last.mem = h->pre_start; 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_test_null(h, ngx_palloc(pool, sizeof(ngx_hunk_t)), NULL); #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 { ngx_test_null(h->pre_start, ngx_palloc(pool, size), NULL); h->start = h->pos.mem = h->last.mem = h->pre_start; h->end = h->post_end = h->start + size; h->type = NGX_HUNK_TEMP; h->tag = 0; h->file = NULL; } return h; }