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bisect: avoid adding irrelevant revisions to bisect state...

bisect: avoid adding irrelevant revisions to bisect state When adding new revisions to the bisect state, it only makes sense to add information about revisions that are under consideration (i.e., those that are topologically between the known good and bad revisions). However, if the user passes in a revset (e.g., '!merge()' to exclude merge commits), hg will resolve the revset first and add all matching revisions to the bisect state (which in this case would likely be the majority of revisions in the repo). To avoid this, revisions should only be added to the bisect state if they are between the good and bad revisions (and therefore relevant to the bisection). -- Here are the results of some performance tests using the `mozilla-central` repo (since it is one of the largest freely-available hg repositories in the wild). These tests compare the performance of a locally-built `hg` before and after application of this series. Note that `--noupdate` is passed to avoid including update time (which should not vary across cases). Setup (run between each test): $ hg bisect --reset $ hg bisect --noupdate --bad $ hg bisect --noupdate --good Test using a revset that returns a very large number of revisions: $ time hg bisect --noupdate --skip '!merge()' > /dev/null Before: real 0m9.398s user 0m9.233s sys 0m0.120s After: real 0m1.513s user 0m1.425s sys 0m0.052s Test using a revset that is expensive to compute: $ time hg bisect --noupdate --skip 'desc("Bug")' > /dev/null Before: real 0m49.853s user 0m49.580s sys 0m0.243s After: real 0m4.120s user 0m4.036s sys 0m0.048s

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      Check that renames are correctly saved by a commit after a merge

      Test with the merge on 3 having the rename on the local parent

        $ hg init a

        $ cd a

        $ echo line1 > foo

        $ hg add foo

        $ hg ci -m '0: add foo'

        $ echo line2 >> foo

        $ hg ci -m '1: change foo'

        $ hg up -C 0

        1 files updated, 0 files merged, 0 files removed, 0 files unresolved

        $ hg mv foo bar

        $ rm bar

        $ echo line0 > bar

        $ echo line1 >> bar

        $ hg ci -m '2: mv foo bar; change bar'

        created new head

        $ hg merge 1

        merging bar and foo to bar

        0 files updated, 1 files merged, 0 files removed, 0 files unresolved

        (branch merge, don't forget to commit)

        $ cat bar

        line0

        line1

        line2

        $ hg ci -m '3: merge with local rename'

        $ hg debugindex bar

           rev linkrev       nodeid    p1-nodeid    p2-nodeid

             0       2 d35118874825 000000000000 000000000000

             1       3 5345f5ab8abd 000000000000 d35118874825

        $ hg debugrename bar

        bar renamed from foo:9e25c27b87571a1edee5ae4dddee5687746cc8e2

        $ hg debugindex foo

           rev linkrev       nodeid    p1-nodeid    p2-nodeid

             0       0 690b295714ae 000000000000 000000000000

             1       1 9e25c27b8757 690b295714ae 000000000000

      Revert the content change from rev 2:

        $ hg up -C 2

        1 files updated, 0 files merged, 0 files removed, 0 files unresolved

        $ rm bar

        $ echo line1 > bar

        $ hg ci -m '4: revert content change from rev 2'

        created new head

        $ hg log --template '{rev}:{node|short} {parents}\n'

        4:2263c1be0967 2:0f2ff26688b9 

        3:0555950ead28 2:0f2ff26688b9 1:5cd961e4045d 

        2:0f2ff26688b9 0:2665aaee66e9 

        1:5cd961e4045d 

        0:2665aaee66e9 

      This should use bar@rev2 as the ancestor:

        $ hg --debug merge 3

        resolving manifests

         branchmerge: True, force: False, partial: False

         ancestor: 0f2ff26688b9, local: 2263c1be0967+, remote: 0555950ead28

        starting 4 threads for background file closing (?)

         preserving bar for resolve of bar

         bar: versions differ -> m

        picked tool ':merge' for bar (binary False symlink False changedelete False)

        merging bar

        my bar@2263c1be0967+ other bar@0555950ead28 ancestor bar@0f2ff26688b9

         premerge successful

        0 files updated, 1 files merged, 0 files removed, 0 files unresolved

        (branch merge, don't forget to commit)

        $ cat bar

        line1

        line2

        $ hg ci -m '5: merge'

        $ hg debugindex bar

           rev linkrev       nodeid    p1-nodeid    p2-nodeid

             0       2 d35118874825 000000000000 000000000000

             1       3 5345f5ab8abd 000000000000 d35118874825

             2       4 ff4b45017382 d35118874825 000000000000

             3       5 3701b4893544 ff4b45017382 5345f5ab8abd

      Same thing, but with the merge on 3 having the rename

      on the remote parent:

        $ cd ..

        $ hg clone -U -r 1 -r 2 a b

        adding changesets

        adding manifests

        adding file changes

        added 3 changesets with 3 changes to 2 files (+1 heads)

        new changesets 2665aaee66e9:0f2ff26688b9

        $ cd b

        $ hg up -C 1

        1 files updated, 0 files merged, 0 files removed, 0 files unresolved

        $ hg merge 2

        merging foo and bar to bar

        0 files updated, 1 files merged, 0 files removed, 0 files unresolved

        (branch merge, don't forget to commit)

        $ cat bar

        line0

        line1

        line2

        $ hg ci -m '3: merge with remote rename'

        $ hg debugindex bar

           rev linkrev       nodeid    p1-nodeid    p2-nodeid

             0       2 d35118874825 000000000000 000000000000

             1       3 5345f5ab8abd 000000000000 d35118874825

        $ hg debugrename bar

        bar renamed from foo:9e25c27b87571a1edee5ae4dddee5687746cc8e2

        $ hg debugindex foo

           rev linkrev       nodeid    p1-nodeid    p2-nodeid

             0       0 690b295714ae 000000000000 000000000000

             1       1 9e25c27b8757 690b295714ae 000000000000

      Revert the content change from rev 2:

        $ hg up -C 2

        1 files updated, 0 files merged, 0 files removed, 0 files unresolved

        $ rm bar

        $ echo line1 > bar

        $ hg ci -m '4: revert content change from rev 2'

        created new head

        $ hg log --template '{rev}:{node|short} {parents}\n'

        4:2263c1be0967 2:0f2ff26688b9 

        3:3ffa6b9e35f0 1:5cd961e4045d 2:0f2ff26688b9 

        2:0f2ff26688b9 0:2665aaee66e9 

        1:5cd961e4045d 

        0:2665aaee66e9 

      This should use bar@rev2 as the ancestor:

        $ hg --debug merge 3

        resolving manifests

         branchmerge: True, force: False, partial: False

         ancestor: 0f2ff26688b9, local: 2263c1be0967+, remote: 3ffa6b9e35f0

        starting 4 threads for background file closing (?)

         preserving bar for resolve of bar

         bar: versions differ -> m

        picked tool ':merge' for bar (binary False symlink False changedelete False)

        merging bar

        my bar@2263c1be0967+ other bar@3ffa6b9e35f0 ancestor bar@0f2ff26688b9

         premerge successful

        0 files updated, 1 files merged, 0 files removed, 0 files unresolved

        (branch merge, don't forget to commit)

        $ cat bar

        line1

        line2

        $ hg ci -m '5: merge'

        $ hg debugindex bar

           rev linkrev       nodeid    p1-nodeid    p2-nodeid

             0       2 d35118874825 000000000000 000000000000

             1       3 5345f5ab8abd 000000000000 d35118874825

             2       4 ff4b45017382 d35118874825 000000000000

             3       5 3701b4893544 ff4b45017382 5345f5ab8abd

        $ cd ..

	Site-wide shortcuts
/	Use quick search box
g h	Goto home page
g g	Goto my private gists page
g G	Goto my public gists page
g 0-9	Goto bookmarked items from 0-9
n r	New repository page
n g	New gist page

	Repositories
g s	Goto summary page
g c	Goto changelog page
g f	Goto files page
g F	Goto files page with file search activated
g p	Goto pull requests page
g o	Goto repository settings
g O	Goto repository access permissions settings
t s	Toggle sidebar on some pages

				Check that renames are correctly saved by a commit after a merge

				Test with the merge on 3 having the rename on the local parent

				$ hg init a
				$ cd a

				$ echo line1 > foo
				$ hg add foo
				$ hg ci -m '0: add foo'

				$ echo line2 >> foo
				$ hg ci -m '1: change foo'

				$ hg up -C 0
				1 files updated, 0 files merged, 0 files removed, 0 files unresolved

				$ hg mv foo bar
				$ rm bar
				$ echo line0 > bar
				$ echo line1 >> bar
				$ hg ci -m '2: mv foo bar; change bar'
				created new head

				$ hg merge 1
				merging bar and foo to bar
				0 files updated, 1 files merged, 0 files removed, 0 files unresolved
				(branch merge, don't forget to commit)

				$ cat bar
				line0
				line1
				line2

				$ hg ci -m '3: merge with local rename'

				$ hg debugindex bar
				rev linkrev nodeid p1-nodeid p2-nodeid
				0 2 d35118874825 000000000000 000000000000
				1 3 5345f5ab8abd 000000000000 d35118874825

				$ hg debugrename bar
				bar renamed from foo:9e25c27b87571a1edee5ae4dddee5687746cc8e2

				$ hg debugindex foo
				rev linkrev nodeid p1-nodeid p2-nodeid
				0 0 690b295714ae 000000000000 000000000000
				1 1 9e25c27b8757 690b295714ae 000000000000


				Revert the content change from rev 2:

				$ hg up -C 2
				1 files updated, 0 files merged, 0 files removed, 0 files unresolved
				$ rm bar
				$ echo line1 > bar
				$ hg ci -m '4: revert content change from rev 2'
				created new head

				$ hg log --template '{rev}:{node\|short} {parents}\n'
				4:2263c1be0967 2:0f2ff26688b9
				3:0555950ead28 2:0f2ff26688b9 1:5cd961e4045d
				2:0f2ff26688b9 0:2665aaee66e9
				1:5cd961e4045d
				0:2665aaee66e9

				This should use bar@rev2 as the ancestor:

				$ hg --debug merge 3
				resolving manifests
				branchmerge: True, force: False, partial: False
				ancestor: 0f2ff26688b9, local: 2263c1be0967+, remote: 0555950ead28
				starting 4 threads for background file closing (?)
				preserving bar for resolve of bar
				bar: versions differ -> m
				picked tool ':merge' for bar (binary False symlink False changedelete False)
				merging bar
				my bar@2263c1be0967+ other bar@0555950ead28 ancestor bar@0f2ff26688b9
				premerge successful
				0 files updated, 1 files merged, 0 files removed, 0 files unresolved
				(branch merge, don't forget to commit)

				$ cat bar
				line1
				line2

				$ hg ci -m '5: merge'

				$ hg debugindex bar
				rev linkrev nodeid p1-nodeid p2-nodeid
				0 2 d35118874825 000000000000 000000000000
				1 3 5345f5ab8abd 000000000000 d35118874825
				2 4 ff4b45017382 d35118874825 000000000000
				3 5 3701b4893544 ff4b45017382 5345f5ab8abd


				Same thing, but with the merge on 3 having the rename
				on the remote parent:

				$ cd ..
				$ hg clone -U -r 1 -r 2 a b
				adding changesets
				adding manifests
				adding file changes
				added 3 changesets with 3 changes to 2 files (+1 heads)
				new changesets 2665aaee66e9:0f2ff26688b9
				$ cd b

				$ hg up -C 1
				1 files updated, 0 files merged, 0 files removed, 0 files unresolved

				$ hg merge 2
				merging foo and bar to bar
				0 files updated, 1 files merged, 0 files removed, 0 files unresolved
				(branch merge, don't forget to commit)

				$ cat bar
				line0
				line1
				line2

				$ hg ci -m '3: merge with remote rename'

				$ hg debugindex bar
				rev linkrev nodeid p1-nodeid p2-nodeid
				0 2 d35118874825 000000000000 000000000000
				1 3 5345f5ab8abd 000000000000 d35118874825

				$ hg debugrename bar
				bar renamed from foo:9e25c27b87571a1edee5ae4dddee5687746cc8e2

				$ hg debugindex foo
				rev linkrev nodeid p1-nodeid p2-nodeid
				0 0 690b295714ae 000000000000 000000000000
				1 1 9e25c27b8757 690b295714ae 000000000000


				Revert the content change from rev 2:

				$ hg up -C 2
				1 files updated, 0 files merged, 0 files removed, 0 files unresolved
				$ rm bar
				$ echo line1 > bar
				$ hg ci -m '4: revert content change from rev 2'
				created new head

				$ hg log --template '{rev}:{node\|short} {parents}\n'
				4:2263c1be0967 2:0f2ff26688b9
				3:3ffa6b9e35f0 1:5cd961e4045d 2:0f2ff26688b9
				2:0f2ff26688b9 0:2665aaee66e9
				1:5cd961e4045d
				0:2665aaee66e9

				This should use bar@rev2 as the ancestor:

				$ hg --debug merge 3
				resolving manifests
				branchmerge: True, force: False, partial: False
				ancestor: 0f2ff26688b9, local: 2263c1be0967+, remote: 3ffa6b9e35f0
				starting 4 threads for background file closing (?)
				preserving bar for resolve of bar
				bar: versions differ -> m
				picked tool ':merge' for bar (binary False symlink False changedelete False)
				merging bar
				my bar@2263c1be0967+ other bar@3ffa6b9e35f0 ancestor bar@0f2ff26688b9
				premerge successful
				0 files updated, 1 files merged, 0 files removed, 0 files unresolved
				(branch merge, don't forget to commit)

				$ cat bar
				line1
				line2

				$ hg ci -m '5: merge'

				$ hg debugindex bar
				rev linkrev nodeid p1-nodeid p2-nodeid
				0 2 d35118874825 000000000000 000000000000
				1 3 5345f5ab8abd 000000000000 d35118874825
				2 4 ff4b45017382 d35118874825 000000000000
				3 5 3701b4893544 ff4b45017382 5345f5ab8abd

				$ cd ..