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annotate src/testdir/test_memory_usage.vim @ 33337:19b4f85c2649 v9.0.1932

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patch 9.0.1932: Vim9: error when using null object constructor Commit: https://github.com/vim/vim/commit/7398f367d5125eedfb4058c63a5d167fe8601e3d Author: Yegappan Lakshmanan <yegappan@yahoo.com> Date: Sun Sep 24 23:09:10 2023 +0200 patch 9.0.1932: Vim9: error when using null object constructor Problem: Vim9: error when using null object constructor Solution: Check for a null object only when calling an object method closes: #13154 closes: #13163 Signed-off-by: Christian Brabandt <cb@256bit.org> Co-authored-by: Yegappan Lakshmanan <yegappan@yahoo.com>
author Christian Brabandt <cb@256bit.org>
date Sun, 24 Sep 2023 23:15:07 +0200
parents 72245f9c9405
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 " Tests for memory usage.
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2
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3 source check.vim
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4 CheckFeature terminal
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5 CheckNotGui
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6
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7 " Skip tests on Travis CI ASAN build because it's difficult to estimate memory
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8 " usage.
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9 CheckNotAsan
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10
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11 source shared.vim
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12
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13 func s:pick_nr(str) abort
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14 return substitute(a:str, '[^0-9]', '', 'g') * 1
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15 endfunc
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16
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17 if has('win32')
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18 if !executable('wmic')
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19 throw 'Skipped: wmic program missing'
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20 endif
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21 func s:memory_usage(pid) abort
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22 let cmd = printf('wmic process where processid=%d get WorkingSetSize', a:pid)
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23 return s:pick_nr(system(cmd)) / 1024
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24 endfunc
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25 elseif has('unix')
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26 if !executable('ps')
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27 throw 'Skipped: ps program missing'
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28 endif
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29 func s:memory_usage(pid) abort
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30 return s:pick_nr(system('ps -o rss= -p ' . a:pid))
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31 endfunc
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32 else
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33 throw 'Skipped: not win32 or unix'
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34 endif
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35
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36 " Wait for memory usage to level off.
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37 func s:monitor_memory_usage(pid) abort
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38 let proc = {}
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39 let proc.pid = a:pid
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40 let proc.hist = []
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41 let proc.max = 0
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42
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43 func proc.op() abort
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44 " Check the last 200ms.
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45 let val = s:memory_usage(self.pid)
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46 if self.max < val
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47 let self.max = val
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48 endif
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49 call add(self.hist, val)
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50 if len(self.hist) < 20
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51 return 0
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52 endif
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53 let sample = remove(self.hist, 0)
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54 return len(uniq([sample] + self.hist)) == 1
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55 endfunc
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56
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57 call WaitFor({-> proc.op()}, 10000)
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58 return {'last': get(proc.hist, -1), 'max': proc.max}
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59 endfunc
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60
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61 let s:term_vim = {}
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62
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63 func s:term_vim.start(...) abort
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64 let self.buf = term_start([GetVimProg()] + a:000)
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65 let self.job = term_getjob(self.buf)
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66 call WaitFor({-> job_status(self.job) ==# 'run'})
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67 let self.pid = job_info(self.job).process
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68
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69 " running an external command may fail once in a while
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70 let g:test_is_flaky = 1
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71 endfunc
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72
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73 func s:term_vim.stop() abort
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74 call term_sendkeys(self.buf, ":qall!\<CR>")
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75 call WaitFor({-> job_status(self.job) ==# 'dead'})
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76 exe self.buf . 'bwipe!'
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77 endfunc
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78
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79 func s:vim_new() abort
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80 return copy(s:term_vim)
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81 endfunc
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82
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83 func Test_memory_func_capture_vargs()
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84 " Case: if a local variable captures a:000, funccall object will be free
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85 " just after it finishes.
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86 let testfile = 'Xtest.vim'
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87 let lines =<< trim END
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88 func s:f(...)
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89 let x = a:000
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90 endfunc
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91 for _ in range(10000)
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92 call s:f(0)
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93 endfor
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94 END
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95 call writefile(lines, testfile, 'D')
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96
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97 let vim = s:vim_new()
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98 call vim.start('--clean', '-c', 'set noswapfile', testfile)
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99 let before = s:monitor_memory_usage(vim.pid).last
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100
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101 call term_sendkeys(vim.buf, ":so %\<CR>")
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102 call WaitFor({-> term_getcursor(vim.buf)[0] == 1})
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103 let after = s:monitor_memory_usage(vim.pid)
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104
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105 " Estimate the limit of max usage as 2x initial usage.
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106 " The lower limit can fluctuate a bit, use 97%.
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107 call assert_inrange(before * 97 / 100, 2 * before, after.max)
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108
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109 " In this case, garbage collecting is not needed.
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110 " The value might fluctuate a bit, allow for 3% tolerance below and 5% above.
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111 " Based on various test runs.
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112 let lower = after.last * 97 / 100
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113 let upper = after.last * 105 / 100
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114 call assert_inrange(lower, upper, after.max)
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115
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116 call vim.stop()
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117 endfunc
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118
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119 func Test_memory_func_capture_lvars()
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120 " Case: if a local variable captures l: dict, funccall object will not be
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121 " free until garbage collector runs, but after that memory usage doesn't
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122 " increase so much even when rerun Xtest.vim since system memory caches.
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123 let testfile = 'Xtest.vim'
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124 let lines =<< trim END
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125 func s:f()
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126 let x = l:
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127 endfunc
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128 for _ in range(10000)
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129 call s:f()
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130 endfor
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131 END
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132 call writefile(lines, testfile, 'D')
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133
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134 let vim = s:vim_new()
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135 call vim.start('--clean', '-c', 'set noswapfile', testfile)
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136 let before = s:monitor_memory_usage(vim.pid).last
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137
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138 call term_sendkeys(vim.buf, ":so %\<CR>")
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139 call WaitFor({-> term_getcursor(vim.buf)[0] == 1})
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140 let after = s:monitor_memory_usage(vim.pid)
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141
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142 " Rerun Xtest.vim.
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143 for _ in range(3)
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144 call term_sendkeys(vim.buf, ":so %\<CR>")
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145 call WaitFor({-> term_getcursor(vim.buf)[0] == 1})
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146 let last = s:monitor_memory_usage(vim.pid).last
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147 endfor
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148
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149 " The usage may be a bit less than the last value, use 80%.
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150 " Allow for 20% tolerance at the upper limit. That's very permissive, but
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151 " otherwise the test fails sometimes. On Cirrus CI with FreeBSD we need to
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152 " be even much more permissive.
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153 if has('bsd')
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154 let multiplier = 19
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155 else
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156 let multiplier = 12
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157 endif
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158 let lower = before * 8 / 10
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159 let upper = (after.max + (after.last - before)) * multiplier / 10
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160 call assert_inrange(lower, upper, last)
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161
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162 call vim.stop()
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163 endfunc
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164
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165 " vim: shiftwidth=2 sts=2 expandtab