Mercurial > hg > nginx
view src/core/ngx_array.c @ 47:d81326c3b21b
nginx-0.0.1-2003-01-15-10:02:27 import
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Wed, 15 Jan 2003 07:02:27 +0000 |
parents | 0e81ac0bb3e2 |
children | 19cc647ecd91 |
line wrap: on
line source
#include <ngx_config.h> #include <ngx_alloc.h> #include <ngx_string.h> #include <ngx_array.h> ngx_array_t *ngx_create_array(ngx_pool_t *p, int n, size_t size) { ngx_array_t *a; ngx_test_null(a, ngx_palloc(p, sizeof(ngx_array_t)), NULL); ngx_test_null(a->elts, ngx_palloc(p, n * size), NULL); a->pool = p; a->nelts = 0; a->nalloc = n; a->size = size; return a; } void ngx_destroy_array(ngx_array_t *a) { ngx_pool_t *p; p = a->pool; if (a->elts + a->size * a->nalloc == p->last) { p->last -= a->size * a->nalloc; } if ((char *) a + sizeof(ngx_array_t) == p->last) { p->last = (char *) a; } } void *ngx_push_array(ngx_array_t *a) { void *elt, *new; ngx_pool_t *p; /* array is full */ if (a->nelts == a->nalloc) { p = a->pool; /* array allocation is the last in the pool */ if (a->elts + a->size * a->nelts == p->last && (unsigned) (p->end - p->last) >= a->size) { p->last += a->size; a->nalloc++; /* allocate new array */ } else { ngx_test_null(new, ngx_palloc(p, 2 * a->nalloc * a->size), NULL); ngx_memcpy(new, a->elts, a->nalloc * a->size); a->elts = new; a->nalloc *= 2; } } elt = a->elts + a->size * a->nelts; a->nelts++; return elt; }