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annotate src/memfile_test.c @ 8581:fd454847836d v7.4.1580

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commit https://github.com/vim/vim/commit/7a5c46a9df7ef01a4f6a620861c35400d5ad28d9 Author: Bram Moolenaar <Bram@vim.org> Date: Wed Mar 16 20:41:21 2016 +0100 patch 7.4.1580 Problem: Crash when using function reference. (Luchr) Solution: Set initial refcount. (Ken Takata, closes https://github.com/vim/vim/issues/690)
author Christian Brabandt <cb@256bit.org>
date Wed, 16 Mar 2016 20:45:05 +0100
parents 98a96e0ca73b
children 4aead6a9b7a9
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /* vi:set ts=8 sts=4 sw=4:
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2 *
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3 * VIM - Vi IMproved by Bram Moolenaar
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4 *
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5 * Do ":help uganda" in Vim to read copying and usage conditions.
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6 * Do ":help credits" in Vim to see a list of people who contributed.
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7 * See README.txt for an overview of the Vim source code.
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8 */
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9
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10 /*
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11 * memfile_test.c: Unittests for memfile.c
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12 * Mostly by Ivan Krasilnikov.
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13 */
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14
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15 #undef NDEBUG
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16 #include <assert.h>
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17
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18 /* Must include main.c because it contains much more than just main() */
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19 #define NO_VIM_MAIN
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20 #include "main.c"
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21
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22 /* This file has to be included because the tested functions are static */
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23 #include "memfile.c"
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24
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25 #define index_to_key(i) ((i) ^ 15167)
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26 #define TEST_COUNT 50000
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27
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28 /*
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29 * Test mf_hash_*() functions.
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30 */
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31 static void
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32 test_mf_hash(void)
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33 {
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34 mf_hashtab_T ht;
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35 mf_hashitem_T *item;
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36 blocknr_T key;
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37 long_u i;
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38 long_u num_buckets;
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39
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40 mf_hash_init(&ht);
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41
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42 /* insert some items and check invariants */
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43 for (i = 0; i < TEST_COUNT; i++)
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44 {
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45 assert(ht.mht_count == i);
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46
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47 /* check that number of buckets is a power of 2 */
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48 num_buckets = ht.mht_mask + 1;
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49 assert(num_buckets > 0 && (num_buckets & (num_buckets - 1)) == 0);
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50
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51 /* check load factor */
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52 assert(ht.mht_count <= (num_buckets << MHT_LOG_LOAD_FACTOR));
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53
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54 if (i < (MHT_INIT_SIZE << MHT_LOG_LOAD_FACTOR))
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55 {
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56 /* first expansion shouldn't have occurred yet */
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57 assert(num_buckets == MHT_INIT_SIZE);
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58 assert(ht.mht_buckets == ht.mht_small_buckets);
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59 }
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60 else
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61 {
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62 assert(num_buckets > MHT_INIT_SIZE);
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63 assert(ht.mht_buckets != ht.mht_small_buckets);
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64 }
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65
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66 key = index_to_key(i);
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67 assert(mf_hash_find(&ht, key) == NULL);
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68
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69 /* allocate and add new item */
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70 item = (mf_hashitem_T *)lalloc_clear(sizeof(mf_hashtab_T), FALSE);
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71 assert(item != NULL);
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72 item->mhi_key = key;
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73 mf_hash_add_item(&ht, item);
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74
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75 assert(mf_hash_find(&ht, key) == item);
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76
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77 if (ht.mht_mask + 1 != num_buckets)
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78 {
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79 /* hash table was expanded */
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80 assert(ht.mht_mask + 1 == num_buckets * MHT_GROWTH_FACTOR);
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81 assert(i + 1 == (num_buckets << MHT_LOG_LOAD_FACTOR));
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82 }
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83 }
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84
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85 /* check presence of inserted items */
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86 for (i = 0; i < TEST_COUNT; i++)
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87 {
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88 key = index_to_key(i);
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89 item = mf_hash_find(&ht, key);
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90 assert(item != NULL);
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91 assert(item->mhi_key == key);
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92 }
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93
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94 /* delete some items */
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95 for (i = 0; i < TEST_COUNT; i++)
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96 {
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97 if (i % 100 < 70)
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98 {
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99 key = index_to_key(i);
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100 item = mf_hash_find(&ht, key);
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101 assert(item != NULL);
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102 assert(item->mhi_key == key);
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103
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104 mf_hash_rem_item(&ht, item);
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105 assert(mf_hash_find(&ht, key) == NULL);
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106
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107 mf_hash_add_item(&ht, item);
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108 assert(mf_hash_find(&ht, key) == item);
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109
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110 mf_hash_rem_item(&ht, item);
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111 assert(mf_hash_find(&ht, key) == NULL);
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112
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113 vim_free(item);
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114 }
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115 }
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116
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117 /* check again */
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118 for (i = 0; i < TEST_COUNT; i++)
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119 {
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120 key = index_to_key(i);
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121 item = mf_hash_find(&ht, key);
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122
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123 if (i % 100 < 70)
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124 {
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125 assert(item == NULL);
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126 }
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127 else
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128 {
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129 assert(item != NULL);
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130 assert(item->mhi_key == key);
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131 }
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132 }
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133
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134 /* free hash table and all remaining items */
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135 mf_hash_free_all(&ht);
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136 }
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137
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138 int
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139 main(void)
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140 {
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141 test_mf_hash();
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142 return 0;
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143 }