tests/test-fncache.t
author Durham Goode <durham@fb.com>
Mon, 24 Mar 2014 15:42:13 -0700
changeset 20883 cd443c7589cc
parent 20185 7d4219512823
child 21760 a7f5967ff644
permissions -rw-r--r--
fncache: move fncache writing to be in a transaction Previously the fncache was written at lock.release time. This meant it was not tracked by a transaction, and if an error occurred during the fncache write it would fail to update the fncache, but would not rollback the transaction, resulting in an fncache that was not in sync with the files on disk (which causes verify to fail, and causes streaming clones to not copy all the revlogs). This uses the new transaction backup mechanism to make the fncache transacted. It also moves the fncache from being written at lock.release time, to being written at transaction.close time.
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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Init repo1:
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  $ hg init repo1
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  $ cd repo1
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  $ echo "some text" > a
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  $ hg add
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  adding a
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  $ hg ci -m first
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  $ cat .hg/store/fncache | sort
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  data/a.i
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Testing a.i/b:
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  $ mkdir a.i
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  $ echo "some other text" > a.i/b
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  $ hg add
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  adding a.i/b (glob)
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  $ hg ci -m second
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  $ cat .hg/store/fncache | sort
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  data/a.i
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  data/a.i.hg/b.i
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Testing a.i.hg/c:
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  $ mkdir a.i.hg
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  $ echo "yet another text" > a.i.hg/c
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  $ hg add
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  adding a.i.hg/c (glob)
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  $ hg ci -m third
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  $ cat .hg/store/fncache | sort
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  data/a.i
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  data/a.i.hg.hg/c.i
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  data/a.i.hg/b.i
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Testing verify:
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  $ hg verify
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  checking changesets
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  checking manifests
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  crosschecking files in changesets and manifests
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  checking files
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  3 files, 3 changesets, 3 total revisions
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  $ rm .hg/store/fncache
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  $ hg verify
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  checking changesets
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  checking manifests
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  crosschecking files in changesets and manifests
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  checking files
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   data/a.i@0: missing revlog!
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   data/a.i.hg/c.i@2: missing revlog!
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   data/a.i/b.i@1: missing revlog!
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  3 files, 3 changesets, 3 total revisions
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  3 integrity errors encountered!
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  (first damaged changeset appears to be 0)
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  [1]
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  $ cd ..
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Non store repo:
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  $ hg --config format.usestore=False init foo
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  $ cd foo
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  $ mkdir tst.d
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  $ echo foo > tst.d/foo
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  $ hg ci -Amfoo
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  adding tst.d/foo
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  $ find .hg | sort
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  .hg
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  .hg/00changelog.i
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  .hg/00manifest.i
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  .hg/cache
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  .hg/cache/branch2-served
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  .hg/data
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  .hg/data/tst.d.hg
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  .hg/data/tst.d.hg/foo.i
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  .hg/dirstate
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  .hg/last-message.txt
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  .hg/phaseroots
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  .hg/requires
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  .hg/undo
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  .hg/undo.bookmarks
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  .hg/undo.branch
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  .hg/undo.desc
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  .hg/undo.dirstate
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  .hg/undo.phaseroots
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  $ cd ..
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Non fncache repo:
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  $ hg --config format.usefncache=False init bar
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  $ cd bar
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  $ mkdir tst.d
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  $ echo foo > tst.d/Foo
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  $ hg ci -Amfoo
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  adding tst.d/Foo
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  $ find .hg | sort
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  .hg
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  .hg/00changelog.i
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  .hg/cache
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  .hg/cache/branch2-served
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  .hg/dirstate
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  .hg/last-message.txt
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  .hg/requires
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  .hg/store
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  .hg/store/00changelog.i
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  .hg/store/00manifest.i
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  .hg/store/data
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  .hg/store/data/tst.d.hg
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  .hg/store/data/tst.d.hg/_foo.i
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  .hg/store/phaseroots
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  .hg/store/undo
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  .hg/store/undo.phaseroots
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  .hg/undo.bookmarks
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  .hg/undo.branch
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  .hg/undo.desc
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  .hg/undo.dirstate
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  $ cd ..
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Encoding of reserved / long paths in the store
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  $ hg init r2
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  $ cd r2
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  $ cat <<EOF > .hg/hgrc
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  > [ui]
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  > portablefilenames = ignore
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  > EOF
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  $ hg import -q --bypass - <<EOF
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  > # HG changeset patch
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  > # User test
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  > # Date 0 0
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  > # Node ID 1c7a2f7cb77be1a0def34e4c7cabc562ad98fbd7
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  > # Parent  0000000000000000000000000000000000000000
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  > 1
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  > 
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  > diff --git a/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12.3456789-12345-ABCDEFGHIJKLMNOPRSTUVWXYZ-abcdefghjiklmnopqrstuvwxyz b/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12.3456789-12345-ABCDEFGHIJKLMNOPRSTUVWXYZ-abcdefghjiklmnopqrstuvwxyz
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  > new file mode 100644
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  > --- /dev/null
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  > +++ b/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/xxxxxxxxx-xxxxxxxxx-xxxxxxxxx-123456789-12.3456789-12345-ABCDEFGHIJKLMNOPRSTUVWXYZ-abcdefghjiklmnopqrstuvwxyz
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  > @@ -0,0 +1,1 @@
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  > +foo
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  > diff --git a/AUX/SECOND/X.PRN/FOURTH/FI:FTH/SIXTH/SEVENTH/EIGHTH/NINETH/TENTH/ELEVENTH/LOREMIPSUM.TXT b/AUX/SECOND/X.PRN/FOURTH/FI:FTH/SIXTH/SEVENTH/EIGHTH/NINETH/TENTH/ELEVENTH/LOREMIPSUM.TXT
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  > new file mode 100644
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  > --- /dev/null
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  > +++ b/AUX/SECOND/X.PRN/FOURTH/FI:FTH/SIXTH/SEVENTH/EIGHTH/NINETH/TENTH/ELEVENTH/LOREMIPSUM.TXT
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  > @@ -0,0 +1,1 @@
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  > +foo
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  > diff --git a/Project Planning/Resources/AnotherLongDirectoryName/Followedbyanother/AndAnother/AndThenAnExtremelyLongFileName.txt b/Project Planning/Resources/AnotherLongDirectoryName/Followedbyanother/AndAnother/AndThenAnExtremelyLongFileName.txt
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  > new file mode 100644
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  > --- /dev/null
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  > +++ b/Project Planning/Resources/AnotherLongDirectoryName/Followedbyanother/AndAnother/AndThenAnExtremelyLongFileName.txt	
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  > @@ -0,0 +1,1 @@
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  > +foo
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  > diff --git a/bla.aux/prn/PRN/lpt/com3/nul/coma/foo.NUL/normal.c b/bla.aux/prn/PRN/lpt/com3/nul/coma/foo.NUL/normal.c
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  > new file mode 100644
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  > --- /dev/null
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  > +++ b/bla.aux/prn/PRN/lpt/com3/nul/coma/foo.NUL/normal.c
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  > @@ -0,0 +1,1 @@
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  > +foo
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   161
  > diff --git a/enterprise/openesbaddons/contrib-imola/corba-bc/netbeansplugin/wsdlExtension/src/main/java/META-INF/services/org.netbeans.modules.xml.wsdl.bindingsupport.spi.ExtensibilityElementTemplateProvider b/enterprise/openesbaddons/contrib-imola/corba-bc/netbeansplugin/wsdlExtension/src/main/java/META-INF/services/org.netbeans.modules.xml.wsdl.bindingsupport.spi.ExtensibilityElementTemplateProvider
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  > new file mode 100644
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  > --- /dev/null
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  > +++ b/enterprise/openesbaddons/contrib-imola/corba-bc/netbeansplugin/wsdlExtension/src/main/java/META-INF/services/org.netbeans.modules.xml.wsdl.bindingsupport.spi.ExtensibilityElementTemplateProvider
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  > @@ -0,0 +1,1 @@
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  > +foo
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  > EOF
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  $ find .hg/store -name *.i  | sort
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  .hg/store/00changelog.i
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  .hg/store/00manifest.i
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  .hg/store/data/bla.aux/pr~6e/_p_r_n/lpt/co~6d3/nu~6c/coma/foo._n_u_l/normal.c.i
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  .hg/store/dh/12345678/12345678/12345678/12345678/12345678/12345678/12345678/12345/xxxxxx168e07b38e65eff86ab579afaaa8e30bfbe0f35f.i
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  .hg/store/dh/au~78/second/x.prn/fourth/fi~3afth/sixth/seventh/eighth/nineth/tenth/loremia20419e358ddff1bf8751e38288aff1d7c32ec05.i
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  .hg/store/dh/enterpri/openesba/contrib-/corba-bc/netbeans/wsdlexte/src/main/java/org.net7018f27961fdf338a598a40c4683429e7ffb9743.i
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  .hg/store/dh/project_/resource/anotherl/followed/andanoth/andthenanextremelylongfilename0d8e1f4187c650e2f1fdca9fd90f786bc0976b6b.i
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  $ cd ..
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20883
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Aborting lock does not prevent fncache writes
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20883
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  $ cat > exceptionext.py <<EOF
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  > import os
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  > from mercurial import commands, util
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  > from mercurial.extensions import wrapfunction
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  > 
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  > def lockexception(orig, vfs, lockname, wait, releasefn, acquirefn, desc):
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  >     def releasewrap():
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  >         raise util.Abort("forced lock failure")
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  >     return orig(vfs, lockname, wait, releasewrap, acquirefn, desc)
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  > 
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  > def reposetup(ui, repo):
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  >     wrapfunction(repo, '_lock', lockexception)
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   194
  > 
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  > cmdtable = {}
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  > 
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   197
  > EOF
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   198
  $ extpath=`pwd`/exceptionext.py
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  $ hg init fncachetxn
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  $ cd fncachetxn
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   201
  $ printf "[extensions]\nexceptionext=$extpath\n" >> .hg/hgrc
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  $ touch y
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  $ hg ci -qAm y
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  abort: forced lock failure
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  [255]
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  $ cat .hg/store/fncache
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  data/y.i
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   209
Aborting transaction prevents fncache change
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   211
  $ cat > ../exceptionext.py <<EOF
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   212
  > import os
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  > from mercurial import commands, util, transaction
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   214
  > from mercurial.extensions import wrapfunction
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  > 
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   216
  > def wrapper(orig, self, *args, **kwargs):
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  >     origonclose = self.onclose
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  >     def onclose():
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  >         origonclose()
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  >         raise util.Abort("forced transaction failure")
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  >     self.onclose = onclose
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  >     return orig(self, *args, **kwargs)
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  > 
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   224
  > def uisetup(ui):
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  >     wrapfunction(transaction.transaction, 'close', wrapper)
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  > 
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   227
  > cmdtable = {}
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   228
  > 
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   229
  > EOF
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   230
  $ rm "${extpath}c"
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   231
  $ touch z
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   232
  $ hg ci -qAm z
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   233
  transaction abort!
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   234
  rollback completed
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  abort: forced transaction failure
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   236
  [255]
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   237
  $ cat .hg/store/fncache
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   238
  data/y.i