author | Pierre-Yves David <pierre-yves.david@octobus.net> |
Sun, 26 Feb 2023 07:08:16 +0100 | |
branch | stable |
changeset 49689 | 0f483a2c29e7 |
parent 49688 | e5fea4f1b052 |
child 49690 | 5bf6b8015035 |
permissions | -rw-r--r-- |
49687
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1 |
============================================================================== |
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2 |
Check potential race conditions between a dirstate's read and other operations |
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3 |
============================================================================== |
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4 |
|
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5 |
Some commands, like `hg status`, do not need to take the wlock but need to |
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6 |
access dirstate data. |
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7 |
Other commands might update the dirstate data while this happens. |
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8 |
|
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9 |
This can create issues if repository data is read in the wrong order, or for |
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10 |
the dirstate-v2 format where the data is contained in multiple files. |
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11 |
|
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12 |
This test file is meant to test various cases where such parallel operations |
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13 |
happen and make sure the reading process behaves fine. We do so with a `hg |
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14 |
status` command since it is probably the most advanced of such read-only |
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15 |
command. |
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|
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17 |
It bears simililarity with `tests/test-dirstate-status-race.t ` but tests a |
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18 |
different type of race. |
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19 |
|
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20 |
Setup |
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21 |
===== |
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|
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23 |
$ directories="dir dir/nested dir2" |
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$ first_files="dir/nested/a dir/b dir/c dir/d dir2/e f" |
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$ 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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$ 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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$ hg log -G -v |
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@ changeset: 1:9a86dcbfb938 |
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| tag: tip |
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| user: test |
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| 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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| description: |
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| more files to have two commit |
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| |
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| |
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o changeset: 0:4f23db756b09 |
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user: test |
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date: Thu Jan 01 00:00:00 1970 +0000 |
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files: dir/b dir/c dir/d dir/nested/a dir2/e f |
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49 |
description: |
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50 |
recreate a bunch of files to facilitate dirstate-v2 append |
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|
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|
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$ hg manifest |
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dir/b |
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dir/c |
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dir/d |
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dir/i |
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dir/j |
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dir/nested/a |
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dir/nested/h |
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dir/nested/m |
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dir2/e |
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dir2/k |
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dir2/l |
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f |
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g |
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|
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68 |
Add some unknown files and refresh the dirstate |
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|
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$ touch -t 200001010020 $extra_files |
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$ hg add dir/o |
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$ hg remove dir/nested/m |
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|
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$ hg st --config devel.dirstate.v2.data_update_mode=force-new |
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A dir/o |
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R dir/nested/m |
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? dir/n |
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? p |
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? q |
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80 |
$ hg debugstate |
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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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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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n 644 0 2000-01-01 00:10:00 dir/j |
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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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r ?????????????????????????????????? dir/nested/m (glob) |
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a ?????????????????????????????????? dir/o (glob) |
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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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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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> --config devel.sync.dirstate.pre-read-file=$TESTTMP/status-race-lock \ |
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112 |
> & |
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$ $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 $d2args |
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$ 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 .. |
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144 |
|
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145 |
Race with a `hg commit` |
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146 |
----------------------- |
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|
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148 |
$ cp -a reference-repo race-with-commit |
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$ cd race-with-commit |
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|
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151 |
spin a `hg status with some cache to update |
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|
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$ hg st >$TESTTMP/status-race-lock.out 2>$TESTTMP/status-race-lock.log \ |
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> --config rhg.on-unsupported=abort \ |
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> --config devel.sync.dirstate.pre-read-file=$TESTTMP/status-race-lock \ |
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156 |
> & |
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$ $RUNTESTDIR/testlib/wait-on-file 5 $TESTTMP/status-race-lock.waiting |
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|
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159 |
Add a do a commit |
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|
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161 |
$ hg status |
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A dir/o |
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R dir/nested/m |
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? dir/n |
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? p |
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? q |
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$ hg commit -m 'racing commit' |
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$ touch $TESTTMP/status-race-lock |
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$ wait |
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|
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171 |
commit was created, and status is now clean |
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|
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173 |
$ hg log -GT '{node|short} {desc}\n' |
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@ 02a67a77ee9b racing commit |
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| |
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o 9a86dcbfb938 more files to have two commit |
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| |
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o 4f23db756b09 recreate a bunch of files to facilitate dirstate-v2 append |
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|
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$ hg status |
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? dir/n |
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? p |
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? q |
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|
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The status process should return a consistent result and not crash. |
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$ cat $TESTTMP/status-race-lock.out |
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M dir/o (known-bad-output no-rhg !) |
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? dir/n |
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? p |
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? q |
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$ cat $TESTTMP/status-race-lock.log |
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warning: ignoring unknown working parent 02a67a77ee9b! (known-bad-output no-rhg !) |
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|
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final cleanup |
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$ rm $TESTTMP/status-race-lock $TESTTMP/status-race-lock.waiting |
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$ cd .. |
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Race with a `hg update` |
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----------------------- |
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$ cp -a reference-repo race-with-update |
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$ cd race-with-update |
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spin a `hg status` with some caches to update |
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$ hg st >$TESTTMP/status-race-lock.out 2>$TESTTMP/status-race-lock.log \ |
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> --config rhg.on-unsupported=abort \ |
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> --config devel.sync.dirstate.pre-read-file=$TESTTMP/status-race-lock \ |
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> & |
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$ $RUNTESTDIR/testlib/wait-on-file 5 $TESTTMP/status-race-lock.waiting |
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do an update |
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$ hg status |
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A dir/o |
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R dir/nested/m |
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? dir/n |
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? p |
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? q |
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$ hg log -GT '{node|short} {desc}\n' |
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@ 9a86dcbfb938 more files to have two commit |
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| |
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o 4f23db756b09 recreate a bunch of files to facilitate dirstate-v2 append |
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$ hg update --merge .^ |
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0 files updated, 0 files merged, 6 files removed, 0 files unresolved |
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$ touch $TESTTMP/status-race-lock |
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$ wait |
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$ hg log -GT '{node|short} {desc}\n' |
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o 9a86dcbfb938 more files to have two commit |
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| |
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@ 4f23db756b09 recreate a bunch of files to facilitate dirstate-v2 append |
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$ hg status |
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A dir/o |
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? dir/n |
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? p |
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? q |
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The status process should return a consistent result and not crash. |
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$ cat $TESTTMP/status-race-lock.out |
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A dir/o |
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? dir/n |
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? p |
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? q |
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$ cat $TESTTMP/status-race-lock.log |
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final cleanup |
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$ rm $TESTTMP/status-race-lock $TESTTMP/status-race-lock.waiting |
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$ cd .. |