upstream/mercurial-mirror Files · tests/test-revlog-mmapindex.t

scmutil: make shortest() respect disambiguation revset...

scmutil: make shortest() respect disambiguation revset The previous patch would let you use a shorter prefix if the prefix is unique within a configured revset. However, that's not very useful if there's no simple way of knowing what that shorter prefix is. This patch adapts the shortest() template function to use the shorter prefixes for nodes in the configured revset. This is currently extremely slow, because it calculates the revset for each call to shortest(). To make this faster, the next patch will start caching the revset instance. Ideally we'd cache a prefix tree instance instead. Differential Revision: https://phab.mercurial-scm.org/D4038

Jun Wu - - Load All Authors

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      create verbosemmap.py

        $ cat << EOF > verbosemmap.py

        > # extension to make util.mmapread verbose

        > 

        > from __future__ import absolute_import

        > 

        > from mercurial import (

        >     extensions,

        >     pycompat,

        >     util,

        > )

        > 

        > def extsetup(ui):

        >     def mmapread(orig, fp):

        >         ui.write(b"mmapping %s\n" % pycompat.bytestr(fp.name))

        >         ui.flush()

        >         return orig(fp)

        > 

        >     extensions.wrapfunction(util, 'mmapread', mmapread)

        > EOF

      setting up base repo

        $ hg init a

        $ cd a

        $ touch a

        $ hg add a

        $ hg commit -qm base

        $ for i in `$TESTDIR/seq.py 1 100` ; do

        > echo $i > a

        > hg commit -qm $i

        > done

      set up verbosemmap extension

        $ cat << EOF >> $HGRCPATH

        > [extensions]

        > verbosemmap=$TESTTMP/verbosemmap.py

        > EOF

      mmap index which is now more than 4k long

        $ hg log -l 5 -T '{rev}\n' --config experimental.mmapindexthreshold=4k

        mmapping $TESTTMP/a/.hg/store/00changelog.i

        100

        99

        98

        97

        96

      do not mmap index which is still less than 32k

        $ hg log -l 5 -T '{rev}\n' --config experimental.mmapindexthreshold=32k

        100

        99

        98

        97

        96

        $ cd ..

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				create verbosemmap.py
				$ cat << EOF > verbosemmap.py
				> # extension to make util.mmapread verbose
				>
				> from __future__ import absolute_import
				>
				> from mercurial import (
				> extensions,
				> pycompat,
				> util,
				> )
				>
				> def extsetup(ui):
				> def mmapread(orig, fp):
				> ui.write(b"mmapping %s\n" % pycompat.bytestr(fp.name))
				> ui.flush()
				> return orig(fp)
				>
				> extensions.wrapfunction(util, 'mmapread', mmapread)
				> EOF

				setting up base repo
				$ hg init a
				$ cd a
				$ touch a
				$ hg add a
				$ hg commit -qm base
				$ for i in `$TESTDIR/seq.py 1 100` ; do
				> echo $i > a
				> hg commit -qm $i
				> done

				set up verbosemmap extension
				$ cat << EOF >> $HGRCPATH
				> [extensions]
				> verbosemmap=$TESTTMP/verbosemmap.py
				> EOF

				mmap index which is now more than 4k long
				$ hg log -l 5 -T '{rev}\n' --config experimental.mmapindexthreshold=4k
				mmapping $TESTTMP/a/.hg/store/00changelog.i
				100
				99
				98
				97
				96

				do not mmap index which is still less than 32k
				$ hg log -l 5 -T '{rev}\n' --config experimental.mmapindexthreshold=32k
				100
				99
				98
				97
				96

				$ cd ..