annotate src/core/ngx_list.c @ 674:4dcaf40cc702 NGINX_1_3_0

nginx 1.3.0 *) Feature: the "debug_connection" directive now supports IPv6 addresses and the "unix:" parameter. *) Feature: the "set_real_ip_from" directive and the "proxy" parameter of the "geo" directive now support IPv6 addresses. *) Feature: the "real_ip_recursive", "geoip_proxy", and "geoip_proxy_recursive" directives. *) Feature: the "proxy_recursive" parameter of the "geo" directive. *) Bugfix: a segmentation fault might occur in a worker process if the "resolver" directive was used. *) Bugfix: a segmentation fault might occur in a worker process if the "fastcgi_pass", "scgi_pass", or "uwsgi_pass" directives were used and backend returned incorrect response. *) Bugfix: a segmentation fault might occur in a worker process if the "rewrite" directive was used and new request arguments in a replacement used variables. *) Bugfix: nginx might hog CPU if the open file resource limit was reached. *) Bugfix: nginx might loop infinitely over backends if the "proxy_next_upstream" directive with the "http_404" parameter was used and there were backup servers specified in an upstream block. *) Bugfix: adding the "down" parameter of the "server" directive might cause unneeded client redistribution among backend servers if the "ip_hash" directive was used. *) Bugfix: socket leak. Thanks to Yichun Zhang. *) Bugfix: in the ngx_http_fastcgi_module.
author Igor Sysoev <http://sysoev.ru>
date Tue, 15 May 2012 00:00:00 +0400
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 * Copyright (C) Nginx, Inc.
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5 */
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8 #include <ngx_config.h>
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9 #include <ngx_core.h>
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12 ngx_list_t *
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13 ngx_list_create(ngx_pool_t *pool, ngx_uint_t n, size_t size)
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14 {
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15 ngx_list_t *list;
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17 list = ngx_palloc(pool, sizeof(ngx_list_t));
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18 if (list == NULL) {
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19 return NULL;
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20 }
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22 list->part.elts = ngx_palloc(pool, n * size);
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23 if (list->part.elts == NULL) {
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24 return NULL;
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25 }
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27 list->part.nelts = 0;
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28 list->part.next = NULL;
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29 list->last = &list->part;
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30 list->size = size;
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31 list->nalloc = n;
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32 list->pool = pool;
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34 return list;
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35 }
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38 void *
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39 ngx_list_push(ngx_list_t *l)
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40 {
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41 void *elt;
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42 ngx_list_part_t *last;
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44 last = l->last;
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46 if (last->nelts == l->nalloc) {
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48 /* the last part is full, allocate a new list part */
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50 last = ngx_palloc(l->pool, sizeof(ngx_list_part_t));
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51 if (last == NULL) {
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52 return NULL;
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53 }
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55 last->elts = ngx_palloc(l->pool, l->nalloc * l->size);
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56 if (last->elts == NULL) {
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57 return NULL;
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58 }
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60 last->nelts = 0;
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61 last->next = NULL;
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63 l->last->next = last;
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64 l->last = last;
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65 }
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67 elt = (char *) last->elts + l->size * last->nelts;
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68 last->nelts++;
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70 return elt;
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71 }