author | Pierre-Yves David <pierre-yves.david@octobus.net> |
Sat, 25 Feb 2023 00:54:30 +0100 | |
branch | stable |
changeset 49687 | 7169ff59a2f8 |
child 49688 | e5fea4f1b052 |
permissions | -rw-r--r-- |
49687
7169ff59a2f8
dirstate: initial creation of a test file to check dirstate race read
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
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|
1 |
============================================================================== |
7169ff59a2f8
dirstate: initial creation of a test file to check dirstate race read
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parents:
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|
2 |
Check potential race conditions between a dirstate's read and other operations |
7169ff59a2f8
dirstate: initial creation of a test file to check dirstate race read
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3 |
============================================================================== |
7169ff59a2f8
dirstate: initial creation of a test file to check dirstate race read
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parents:
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4 |
|
7169ff59a2f8
dirstate: initial creation of a test file to check dirstate race read
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parents:
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|
5 |
Some commands, like `hg status`, do not need to take the wlock but need to |
7169ff59a2f8
dirstate: initial creation of a test file to check dirstate race read
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parents:
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6 |
access dirstate data. |
7169ff59a2f8
dirstate: initial creation of a test file to check dirstate race read
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7 |
Other commands might update the dirstate data while this happens. |
7169ff59a2f8
dirstate: initial creation of a test file to check dirstate race read
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parents:
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8 |
|
7169ff59a2f8
dirstate: initial creation of a test file to check dirstate race read
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parents:
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9 |
This can create issues if repository data is read in the wrong order, or for |
7169ff59a2f8
dirstate: initial creation of a test file to check dirstate race read
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parents:
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10 |
the dirstate-v2 format where the data is contained in multiple files. |
7169ff59a2f8
dirstate: initial creation of a test file to check dirstate race read
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11 |
|
7169ff59a2f8
dirstate: initial creation of a test file to check dirstate race read
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parents:
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12 |
This test file is meant to test various cases where such parallel operations |
7169ff59a2f8
dirstate: initial creation of a test file to check dirstate race read
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parents:
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13 |
happen and make sure the reading process behaves fine. We do so with a `hg |
7169ff59a2f8
dirstate: initial creation of a test file to check dirstate race read
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parents:
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14 |
status` command since it is probably the most advanced of such read-only |
7169ff59a2f8
dirstate: initial creation of a test file to check dirstate race read
Pierre-Yves David <pierre-yves.david@octobus.net>
parents:
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15 |
command. |
7169ff59a2f8
dirstate: initial creation of a test file to check dirstate race read
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parents:
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16 |
|
7169ff59a2f8
dirstate: initial creation of a test file to check dirstate race read
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17 |
It bears simililarity with `tests/test-dirstate-status-race.t ` but tests a |
7169ff59a2f8
dirstate: initial creation of a test file to check dirstate race read
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18 |
different type of race. |
7169ff59a2f8
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19 |
|
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20 |
Setup |
7169ff59a2f8
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21 |
===== |
7169ff59a2f8
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parents:
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22 |
|
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23 |
$ directories="dir dir/nested dir2" |
7169ff59a2f8
dirstate: initial creation of a test file to check dirstate race read
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24 |
$ first_files="dir/nested/a dir/b dir/c dir/d dir2/e f" |
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25 |
$ second_files="g dir/nested/h dir/i dir/j dir2/k dir2/l dir/nested/m" |
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$ extra_files="dir/n dir/o p q" |
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|
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28 |
$ hg init reference-repo |
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29 |
$ cd reference-repo |
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$ mkdir -p dir/nested dir2 |
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$ touch -t 200001010000 $first_files $directories |
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$ hg commit -Aqm "recreate a bunch of files to facilitate dirstate-v2 append" |
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$ touch -t 200001010010 $second_files $directories |
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$ hg commit -Aqm "more files to have two commit" |
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dirstate: initial creation of a test file to check dirstate race read
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$ hg log -G -v |
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36 |
@ changeset: 1:9a86dcbfb938 |
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37 |
| tag: tip |
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| user: test |
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39 |
| date: Thu Jan 01 00:00:00 1970 +0000 |
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| files: dir/i dir/j dir/nested/h dir/nested/m dir2/k dir2/l g |
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41 |
| description: |
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42 |
| more files to have two commit |
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| |
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| |
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45 |
o changeset: 0:4f23db756b09 |
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user: test |
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47 |
date: Thu Jan 01 00:00:00 1970 +0000 |
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48 |
files: dir/b dir/c dir/d dir/nested/a dir2/e f |
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parents:
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49 |
description: |
7169ff59a2f8
dirstate: initial creation of a test file to check dirstate race read
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parents:
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50 |
recreate a bunch of files to facilitate dirstate-v2 append |
7169ff59a2f8
dirstate: initial creation of a test file to check dirstate race read
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parents:
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51 |
|
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|
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53 |
$ hg manifest |
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54 |
dir/b |
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55 |
dir/c |
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dir/d |
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dir/i |
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dir/j |
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59 |
dir/nested/a |
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dir/nested/h |
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dir/nested/m |
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62 |
dir2/e |
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63 |
dir2/k |
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64 |
dir2/l |
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65 |
f |
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66 |
g |
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67 |
|
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68 |
Add some unknown files and refresh the dirstate |
7169ff59a2f8
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|
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70 |
$ touch -t 200001010020 $extra_files |
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71 |
$ hg add dir/o |
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72 |
$ hg remove dir/nested/m |
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73 |
|
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74 |
$ hg st --config devel.dirstate.v2.data_update_mode=force-new |
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75 |
A dir/o |
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76 |
R dir/nested/m |
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77 |
? dir/n |
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? p |
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? q |
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80 |
$ hg debugstate |
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81 |
n 644 0 2000-01-01 00:00:00 dir/b |
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n 644 0 2000-01-01 00:00:00 dir/c |
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83 |
n 644 0 2000-01-01 00:00:00 dir/d |
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84 |
n 644 0 2000-01-01 00:10:00 dir/i |
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85 |
n 644 0 2000-01-01 00:10:00 dir/j |
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86 |
n 644 0 2000-01-01 00:00:00 dir/nested/a |
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n 644 0 2000-01-01 00:10:00 dir/nested/h |
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88 |
r ?????????????????????????????????? dir/nested/m (glob) |
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a ?????????????????????????????????? dir/o (glob) |
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90 |
n 644 0 2000-01-01 00:00:00 dir2/e |
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n 644 0 2000-01-01 00:10:00 dir2/k |
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n 644 0 2000-01-01 00:10:00 dir2/l |
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n 644 0 2000-01-01 00:00:00 f |
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n 644 0 2000-01-01 00:10:00 g |
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95 |
$ hg debugstate > ../reference |
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$ cd .. |
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|
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98 |
Actual Testing |
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99 |
============== |
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100 |
|
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101 |
Race with a `hg add` |
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102 |
------------------- |
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103 |
|
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104 |
$ cp -a reference-repo race-with-add |
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105 |
$ cd race-with-add |
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106 |
|
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107 |
spin a `hg status` with some caches to update |
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108 |
|
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109 |
$ hg st >$TESTTMP/status-race-lock.out 2>$TESTTMP/status-race-lock.log \ |
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110 |
> --config rhg.on-unsupported=abort \ |
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111 |
> --config devel.sync.dirstate.pre-read-file=$TESTTMP/status-race-lock \ |
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112 |
> & |
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113 |
$ $RUNTESTDIR/testlib/wait-on-file 5 $TESTTMP/status-race-lock.waiting |
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114 |
|
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115 |
Add a file |
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116 |
|
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117 |
$ hg add dir/n $d2args |
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118 |
$ touch $TESTTMP/status-race-lock |
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119 |
$ wait |
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120 |
|
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121 |
The file should in a "added" state |
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122 |
|
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123 |
$ hg status |
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124 |
A dir/n |
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125 |
A dir/o |
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126 |
R dir/nested/m |
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127 |
? p |
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128 |
? q |
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129 |
|
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130 |
The status process should return a consistent result and not crash. |
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131 |
|
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132 |
$ cat $TESTTMP/status-race-lock.out |
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133 |
A dir/n |
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134 |
A dir/o |
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135 |
R dir/nested/m |
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136 |
? p |
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137 |
? q |
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138 |
$ cat $TESTTMP/status-race-lock.log |
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139 |
|
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140 |
final cleanup |
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141 |
|
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142 |
$ rm $TESTTMP/status-race-lock $TESTTMP/status-race-lock.waiting |
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143 |
$ cd .. |