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56
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #ifndef _NGX_HASH_H_INCLUDED_
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8 #define _NGX_HASH_H_INCLUDED_
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9
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10
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11 #include <ngx_config.h>
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12 #include <ngx_core.h>
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13
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14
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15 typedef struct {
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138
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16 void *value;
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17 u_char len;
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18 u_char name[1];
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19 } ngx_hash_elt_t;
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56
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20
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138
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21
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22 typedef struct {
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23 ngx_hash_elt_t **buckets;
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24 ngx_uint_t size;
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56
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25 } ngx_hash_t;
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26
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27
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28 typedef struct {
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138
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29 ngx_hash_t hash;
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30 void *value;
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31 } ngx_hash_wildcard_t;
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32
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33
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34 typedef struct {
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35 ngx_str_t key;
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36 ngx_uint_t key_hash;
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37 void *value;
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38 } ngx_hash_key_t;
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39
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40
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41 typedef ngx_uint_t (*ngx_hash_key_pt) (u_char *data, size_t len);
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42
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43
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44 typedef struct {
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45 ngx_hash_t *hash;
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46 ngx_hash_key_pt key;
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47
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48 ngx_uint_t max_size;
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49 ngx_uint_t bucket_size;
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50
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51 char *name;
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52 ngx_pool_t *pool;
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53 ngx_pool_t *temp_pool;
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54 } ngx_hash_init_t;
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55
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56
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142
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57 #define NGX_HASH_SMALL 1
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58 #define NGX_HASH_LARGE 2
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59
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60 #define NGX_HASH_LARGE_ASIZE 16384
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61 #define NGX_HASH_LARGE_HSIZE 10007
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62
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63 #define NGX_HASH_WILDCARD_KEY 1
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146
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64 #define NGX_HASH_READONLY_KEY 2
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142
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65
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66
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67 typedef struct {
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68 ngx_uint_t hsize;
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69
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70 ngx_pool_t *pool;
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71 ngx_pool_t *temp_pool;
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72
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73 ngx_array_t keys;
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74 ngx_array_t *keys_hash;
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75
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76 ngx_array_t dns_wildcards;
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77 ngx_array_t *dns_wildcards_hash;
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78 } ngx_hash_keys_arrays_t;
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79
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80
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138
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81 typedef struct {
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82 ngx_uint_t hash;
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83 ngx_str_t key;
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84 ngx_str_t value;
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198
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85 u_char *lowcase_key;
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56
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86 } ngx_table_elt_t;
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87
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88
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138
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89 void *ngx_hash_find(ngx_hash_t *hash, ngx_uint_t key, u_char *name, size_t len);
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90 void *ngx_hash_find_wildcard(ngx_hash_wildcard_t *hwc, u_char *name,
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91 size_t len);
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92
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93 ngx_int_t ngx_hash_init(ngx_hash_init_t *hinit, ngx_hash_key_t *names,
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94 ngx_uint_t nelts);
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95 ngx_int_t ngx_hash_wildcard_init(ngx_hash_init_t *hinit, ngx_hash_key_t *names,
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96 ngx_uint_t nelts);
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97
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198
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98 #define ngx_hash(key, c) ((ngx_uint_t) key * 31 + c)
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138
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99 ngx_uint_t ngx_hash_key(u_char *data, size_t len);
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100 ngx_uint_t ngx_hash_key_lc(u_char *data, size_t len);
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101
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142
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102 ngx_int_t ngx_hash_keys_array_init(ngx_hash_keys_arrays_t *ha, ngx_uint_t type);
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103 ngx_int_t ngx_hash_add_key(ngx_hash_keys_arrays_t *ha, ngx_str_t *key,
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104 void *value, ngx_uint_t flags);
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105
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138
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106
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56
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107 #endif /* _NGX_HASH_H_INCLUDED_ */
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