1 /* |
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2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. |
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8 * |
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9 * This code is distributed in the hope that it will be useful, but WITHOUT |
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 * version 2 for more details (a copy is included in the LICENSE file that |
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13 * accompanied this code). |
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14 * |
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15 * You should have received a copy of the GNU General Public License version |
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16 * 2 along with this work; if not, write to the Free Software Foundation, |
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 * |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
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22 * |
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23 */ |
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24 |
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25 #include "precompiled.hpp" |
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26 #include "memory/allocation.hpp" |
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27 #include "memory/resourceArea.hpp" |
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28 #include "utilities/debug.hpp" |
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29 #include "utilities/resourceHash.hpp" |
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30 |
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31 #ifndef PRODUCT |
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32 |
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33 /////////////// Unit tests /////////////// |
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34 |
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35 class TestResourceHashtable : public AllStatic { |
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36 typedef void* K; |
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37 typedef int V; |
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38 |
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39 static unsigned identity_hash(const K& k) { |
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40 return (unsigned)(uintptr_t)k; |
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41 } |
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42 |
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43 static unsigned bad_hash(const K& k) { |
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44 return 1; |
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45 } |
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46 |
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47 class EqualityTestIter { |
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48 public: |
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49 bool do_entry(K const& k, V const& v) { |
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50 assert((uintptr_t)k == (uintptr_t)v, ""); |
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51 return true; // continue iteration |
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52 } |
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53 }; |
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54 |
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55 template< |
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56 unsigned (*HASH) (K const&) = primitive_hash<K>, |
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57 bool (*EQUALS)(K const&, K const&) = primitive_equals<K>, |
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58 unsigned SIZE = 256, |
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59 ResourceObj::allocation_type ALLOC_TYPE = ResourceObj::RESOURCE_AREA, |
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60 MEMFLAGS MEM_TYPE = mtInternal |
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61 > |
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62 class Runner : public AllStatic { |
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63 static void* as_K(uintptr_t val) { return (void*)val; } |
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64 |
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65 public: |
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66 static void test_small() { |
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67 EqualityTestIter et; |
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68 ResourceHashtable<K, V, HASH, EQUALS, SIZE, ALLOC_TYPE, MEM_TYPE> rh; |
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69 |
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70 assert(!rh.contains(as_K(0x1)), ""); |
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71 |
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72 assert(rh.put(as_K(0x1), 0x1), ""); |
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73 assert(rh.contains(as_K(0x1)), ""); |
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74 |
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75 assert(!rh.put(as_K(0x1), 0x1), ""); |
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76 |
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77 assert(rh.put(as_K(0x2), 0x2), ""); |
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78 assert(rh.put(as_K(0x3), 0x3), ""); |
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79 assert(rh.put(as_K(0x4), 0x4), ""); |
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80 assert(rh.put(as_K(0x5), 0x5), ""); |
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81 |
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82 assert(!rh.remove(as_K(0x0)), ""); |
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83 rh.iterate(&et); |
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84 |
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85 assert(rh.remove(as_K(0x1)), ""); |
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86 rh.iterate(&et); |
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87 |
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88 } |
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89 |
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90 // We use keys with the low bits cleared since the default hash will do some shifting |
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91 static void test_small_shifted() { |
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92 EqualityTestIter et; |
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93 ResourceHashtable<K, V, HASH, EQUALS, SIZE, ALLOC_TYPE, MEM_TYPE> rh; |
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94 |
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95 assert(!rh.contains(as_K(0x10)), ""); |
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96 |
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97 assert(rh.put(as_K(0x10), 0x10), ""); |
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98 assert(rh.contains(as_K(0x10)), ""); |
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99 |
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100 assert(!rh.put(as_K(0x10), 0x10), ""); |
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101 |
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102 assert(rh.put(as_K(0x20), 0x20), ""); |
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103 assert(rh.put(as_K(0x30), 0x30), ""); |
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104 assert(rh.put(as_K(0x40), 0x40), ""); |
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105 assert(rh.put(as_K(0x50), 0x50), ""); |
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106 |
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107 assert(!rh.remove(as_K(0x00)), ""); |
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108 |
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109 assert(rh.remove(as_K(0x10)), ""); |
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110 |
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111 rh.iterate(&et); |
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112 } |
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113 |
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114 static void test(unsigned num_elements = SIZE) { |
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115 EqualityTestIter et; |
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116 ResourceHashtable<K, V, HASH, EQUALS, SIZE, ALLOC_TYPE, MEM_TYPE> rh; |
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117 |
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118 for (uintptr_t i = 0; i < num_elements; ++i) { |
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119 assert(rh.put(as_K(i), i), ""); |
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120 } |
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121 |
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122 rh.iterate(&et); |
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123 |
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124 for (uintptr_t i = num_elements; i > 0; --i) { |
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125 uintptr_t index = i - 1; |
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126 assert(rh.remove(as_K(index)), ""); |
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127 } |
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128 rh.iterate(&et); |
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129 for (uintptr_t i = num_elements; i > 0; --i) { |
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130 uintptr_t index = i - 1; |
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131 assert(!rh.remove(as_K(index)), ""); |
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132 } |
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133 rh.iterate(&et); |
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134 } |
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135 }; |
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136 |
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137 public: |
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138 static void run_tests() { |
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139 { |
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140 ResourceMark rm; |
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141 Runner<>::test_small(); |
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142 Runner<>::test_small_shifted(); |
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143 Runner<>::test(); |
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144 } |
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145 |
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146 { |
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147 ResourceMark rm; |
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148 Runner<identity_hash>::test_small(); |
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149 Runner<identity_hash>::test_small_shifted(); |
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150 Runner<identity_hash>::test(); |
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151 } |
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152 |
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153 { |
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154 ResourceMark rm; |
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155 Runner<bad_hash>::test_small(); |
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156 Runner<bad_hash>::test_small_shifted(); |
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157 Runner<bad_hash>::test(); |
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158 } |
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159 |
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160 |
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161 assert(Thread::current()->resource_area()->nesting() == 0, "this code depends on not having an active ResourceMark"); |
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162 // The following test calls will cause an assert if resource allocations occur since we don't have an active mark |
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163 Runner<primitive_hash<K>, primitive_equals<K>, 512, ResourceObj::C_HEAP>::test_small(); |
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164 Runner<primitive_hash<K>, primitive_equals<K>, 512, ResourceObj::C_HEAP>::test_small_shifted(); |
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165 Runner<primitive_hash<K>, primitive_equals<K>, 512, ResourceObj::C_HEAP>::test(); |
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166 |
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167 Runner<bad_hash, primitive_equals<K>, 512, ResourceObj::C_HEAP>::test_small(); |
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168 Runner<bad_hash, primitive_equals<K>, 512, ResourceObj::C_HEAP>::test_small_shifted(); |
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169 Runner<bad_hash, primitive_equals<K>, 512, ResourceObj::C_HEAP>::test(); |
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170 |
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171 Runner<identity_hash, primitive_equals<K>, 1, ResourceObj::C_HEAP>::test_small(); |
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172 Runner<identity_hash, primitive_equals<K>, 1, ResourceObj::C_HEAP>::test_small_shifted(); |
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173 Runner<identity_hash, primitive_equals<K>, 1, ResourceObj::C_HEAP>::test(512); |
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174 } |
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175 }; |
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176 |
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177 void TestResourcehash_test() { |
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178 TestResourceHashtable::run_tests(); |
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179 } |
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180 |
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181 #endif // not PRODUCT |
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182 |
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