Mercurial > hg > nginx
annotate src/core/ngx_list.c @ 4657:36b220b82f23 stable-1.2
Version bump.
author | Maxim Dounin <mdounin@mdounin.ru> |
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date | Mon, 04 Jun 2012 10:00:39 +0000 |
parents | d620f497c50f |
children | a82f305487c2 |
rev | line source |
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
441
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5 */ |
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6 |
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7 |
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8 #include <ngx_config.h> |
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9 #include <ngx_core.h> |
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10 |
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11 |
766 | 12 ngx_list_t * |
13 ngx_list_create(ngx_pool_t *pool, ngx_uint_t n, size_t size) | |
14 { | |
15 ngx_list_t *list; | |
16 | |
17 list = ngx_palloc(pool, sizeof(ngx_list_t)); | |
18 if (list == NULL) { | |
19 return NULL; | |
20 } | |
21 | |
22 list->part.elts = ngx_palloc(pool, n * size); | |
23 if (list->part.elts == NULL) { | |
24 return NULL; | |
25 } | |
26 | |
27 list->part.nelts = 0; | |
28 list->part.next = NULL; | |
29 list->last = &list->part; | |
30 list->size = size; | |
31 list->nalloc = n; | |
32 list->pool = pool; | |
33 | |
34 return list; | |
35 } | |
36 | |
37 | |
38 void * | |
39 ngx_list_push(ngx_list_t *l) | |
414
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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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43 |
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44 last = l->last; |
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45 |
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46 if (last->nelts == l->nalloc) { |
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47 |
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48 /* the last part is full, allocate a new list part */ |
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49 |
501 | 50 last = ngx_palloc(l->pool, sizeof(ngx_list_part_t)); |
51 if (last == NULL) { | |
414
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52 return NULL; |
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53 } |
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54 |
501 | 55 last->elts = ngx_palloc(l->pool, l->nalloc * l->size); |
56 if (last->elts == NULL) { | |
414
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57 return NULL; |
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58 } |
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59 |
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60 last->nelts = 0; |
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61 last->next = NULL; |
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62 |
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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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66 |
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67 elt = (char *) last->elts + l->size * last->nelts; |
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68 last->nelts++; |
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69 |
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70 return elt; |
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71 } |