Mercurial > cpython-lru_cache-weakref

annotate Tools/pybench/With.py @ 87690:66c1c9f32567 default tip

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Add use_weakref option to functools.lru_cache The use_weakref option makes lru_cache create weak references to the function arguments when creating the cache key, which prevents them from staying in the memory forever even after all other references to them are gone. This is a proof of concept for http://bugs.python.org/issue19859
author Radomir Dopieralski <devel@sheep.art.pl>
date Tue, 03 Dec 2013 16:02:48 +0100
parents 63741c7521aa
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 from __future__ import with_statement
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2 from pybench import Test
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3
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4 class WithFinally(Test):
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5
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6 version = 2.0
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7 operations = 20
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8 rounds = 80000
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9
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10 class ContextManager(object):
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11 def __enter__(self):
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12 pass
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13 def __exit__(self, exc, val, tb):
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14 pass
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15
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16 def test(self):
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17
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18 cm = self.ContextManager()
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19
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20 for i in range(self.rounds):
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21 with cm: pass
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22 with cm: pass
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23 with cm: pass
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24 with cm: pass
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25 with cm: pass
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26 with cm: pass
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27 with cm: pass
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28 with cm: pass
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29 with cm: pass
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30 with cm: pass
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31 with cm: pass
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32 with cm: pass
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33 with cm: pass
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34 with cm: pass
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35 with cm: pass
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36 with cm: pass
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37 with cm: pass
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38 with cm: pass
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39 with cm: pass
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40 with cm: pass
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41
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42 def calibrate(self):
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43
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44 cm = self.ContextManager()
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45
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46 for i in range(self.rounds):
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47 pass
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48
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49
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50 class TryFinally(Test):
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51
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52 version = 2.0
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53 operations = 20
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54 rounds = 80000
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55
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56 class ContextManager(object):
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57 def __enter__(self):
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58 pass
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59 def __exit__(self):
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60 # "Context manager" objects used just for their cleanup
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61 # actions in finally blocks usually don't have parameters.
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62 pass
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63
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64 def test(self):
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65
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66 cm = self.ContextManager()
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67
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68 for i in range(self.rounds):
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69 cm.__enter__()
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70 try: pass
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71 finally: cm.__exit__()
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72
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73 cm.__enter__()
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74 try: pass
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75 finally: cm.__exit__()
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76
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77 cm.__enter__()
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78 try: pass
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79 finally: cm.__exit__()
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80
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81 cm.__enter__()
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82 try: pass
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83 finally: cm.__exit__()
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84
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85 cm.__enter__()
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86 try: pass
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87 finally: cm.__exit__()
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88
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89 cm.__enter__()
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90 try: pass
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91 finally: cm.__exit__()
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92
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93 cm.__enter__()
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94 try: pass
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95 finally: cm.__exit__()
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96
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97 cm.__enter__()
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98 try: pass
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99 finally: cm.__exit__()
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100
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101 cm.__enter__()
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102 try: pass
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103 finally: cm.__exit__()
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104
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105 cm.__enter__()
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106 try: pass
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107 finally: cm.__exit__()
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108
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109 cm.__enter__()
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110 try: pass
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111 finally: cm.__exit__()
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112
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113 cm.__enter__()
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114 try: pass
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115 finally: cm.__exit__()
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116
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117 cm.__enter__()
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118 try: pass
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119 finally: cm.__exit__()
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120
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121 cm.__enter__()
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122 try: pass
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123 finally: cm.__exit__()
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124
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125 cm.__enter__()
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126 try: pass
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127 finally: cm.__exit__()
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128
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129 cm.__enter__()
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130 try: pass
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131 finally: cm.__exit__()
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132
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133 cm.__enter__()
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134 try: pass
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135 finally: cm.__exit__()
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136
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137 cm.__enter__()
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138 try: pass
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139 finally: cm.__exit__()
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140
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141 cm.__enter__()
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142 try: pass
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143 finally: cm.__exit__()
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144
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145 cm.__enter__()
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146 try: pass
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147 finally: cm.__exit__()
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148
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149 def calibrate(self):
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150
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151 cm = self.ContextManager()
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152
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153 for i in range(self.rounds):
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154 pass
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155
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156
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157 class WithRaiseExcept(Test):
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158
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159 version = 2.0
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160 operations = 2 + 3 + 3
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161 rounds = 100000
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162
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163 class BlockExceptions(object):
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164 def __enter__(self):
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165 pass
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166 def __exit__(self, exc, val, tb):
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167 return True
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168
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169 def test(self):
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170
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171 error = ValueError
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172 be = self.BlockExceptions()
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173
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174 for i in range(self.rounds):
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175 with be: raise error
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176 with be: raise error
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177 with be: raise error("something")
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178 with be: raise error("something")
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179 with be: raise error("something")
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180 with be: raise error("something")
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181 with be: raise error("something")
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182 with be: raise error("something")
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183
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184 def calibrate(self):
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185
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186 error = ValueError
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187 be = self.BlockExceptions()
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188
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189 for i in range(self.rounds):
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190 pass