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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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660
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4 * Copyright (C) Nginx, Inc.
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0
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5 */
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6
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7
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8 #ifndef _NGX_LIST_H_INCLUDED_
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9 #define _NGX_LIST_H_INCLUDED_
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10
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11
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12 #include <ngx_config.h>
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13 #include <ngx_core.h>
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14
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15
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16 typedef struct ngx_list_part_s ngx_list_part_t;
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17
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18 struct ngx_list_part_s {
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19 void *elts;
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20 ngx_uint_t nelts;
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21 ngx_list_part_t *next;
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22 };
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23
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24
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25 typedef struct {
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26 ngx_list_part_t *last;
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27 ngx_list_part_t part;
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28 size_t size;
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29 ngx_uint_t nalloc;
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30 ngx_pool_t *pool;
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31 } ngx_list_t;
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32
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33
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246
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34 ngx_list_t *ngx_list_create(ngx_pool_t *pool, ngx_uint_t n, size_t size);
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35
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36 static ngx_inline ngx_int_t
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37 ngx_list_init(ngx_list_t *list, ngx_pool_t *pool, ngx_uint_t n, size_t size)
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0
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38 {
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50
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39 list->part.elts = ngx_palloc(pool, n * size);
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40 if (list->part.elts == NULL) {
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0
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41 return NGX_ERROR;
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42 }
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43
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44 list->part.nelts = 0;
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45 list->part.next = NULL;
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46 list->last = &list->part;
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47 list->size = size;
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48 list->nalloc = n;
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49 list->pool = pool;
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50
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51 return NGX_OK;
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52 }
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53
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54
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55 /*
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56 *
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57 * the iteration through the list:
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58 *
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59 * part = &list.part;
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60 * data = part->elts;
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61 *
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62 * for (i = 0 ;; i++) {
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63 *
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64 * if (i >= part->nelts) {
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65 * if (part->next == NULL) {
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66 * break;
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67 * }
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68 *
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69 * part = part->next;
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70 * data = part->elts;
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71 * i = 0;
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72 * }
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73 *
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74 * ... data[i] ...
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75 *
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76 * }
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77 */
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78
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79
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80 void *ngx_list_push(ngx_list_t *list);
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81
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82
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83 #endif /* _NGX_LIST_H_INCLUDED_ */
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