rust-index: optimize find_gca_candidates() on less than 8 revisions
This is expected to be by far the most common case, given that, e.g.,
merging involves using it on two revisions.
Using a `u8` as support for the bitset obviously divides the amount of
RAM needed by 8. To state the obvious, on a repository with 10 million
changesets, this spares 70MB. It is also possible that it'd be slightly
faster, because it is easier to allocate and provides better cache locality.
It is possible that some exhaustive listing of the traits implemented by
`u8` and `u64` would avoid the added duplication, but that can be done later
and would need a replacement for the `MAX` consts.
===============================================
Testing merge involving change to the exec flag
===============================================
#require execbit
Initial setup
==============
$ hg init base-repo
$ cd base-repo
$ cat << EOF > a
> 1
> 2
> 3
> 4
> 5
> 6
> 7
> 8
> 9
> EOF
$ touch b
$ hg add a b
$ hg commit -m "initial commit"
$ cd ..
$ hg init base-exec
$ cd base-exec
$ cat << EOF > a
> 1
> 2
> 3
> 4
> 5
> 6
> 7
> 8
> 9
> EOF
$ chmod +x a
$ touch b
$ hg add a b
$ hg commit -m "initial commit"
$ cd ..
Testing merging mode change
===========================
Adding the flag
---------------
setup
Change on one side, executable bit on the other
$ hg clone base-repo simple-merge-repo
updating to branch default
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd simple-merge-repo
$ chmod +x a
$ hg ci -m "make a executable, no change"
$ [ -x a ] || echo "executable bit not recorded"
$ hg up ".^"
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cat << EOF > a
> 1
> 2
> 3
> 4
> 5
> 6
> 7
> x
> 9
> EOF
$ hg commit -m "edit end of file"
created new head
merge them (from the update side)
$ hg merge 'desc("make a executable, no change")'
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg st
M a
$ [ -x a ] || echo "executable bit lost"
merge them (from the chmod side)
$ hg up -C 'desc("make a executable, no change")'
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg merge 'desc("edit end of file")'
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg st
M a
$ [ -x a ] || echo "executable bit lost"
$ cd ..
Removing the flag
-----------------
Change on one side, executable bit on the other
$ hg clone base-exec simple-merge-repo-removal
updating to branch default
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd simple-merge-repo-removal
$ chmod -x a
$ hg ci -m "make a non-executable, no change"
$ [ -x a ] && echo "executable bit not removed"
[1]
$ hg up ".^"
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cat << EOF > a
> 1
> 2
> 3
> 4
> 5
> 6
> 7
> x
> 9
> EOF
$ hg commit -m "edit end of file"
created new head
merge them (from the update side)
$ hg merge 'desc("make a non-executable, no change")'
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg st
M a
$ [ -x a ] && echo "executable bit not removed"
[1]
merge them (from the chmod side)
$ hg up -C 'desc("make a non-executable, no change")'
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg merge 'desc("edit end of file")'
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg st
M a
$ [ -x a ] && echo "executable bit not removed"
[1]
$ cd ..
Testing merging mode change with rename
=======================================
Adding the flag
---------------
$ hg clone base-repo rename-merge-repo
updating to branch default
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd rename-merge-repo
make "a" executable on one side
$ chmod +x a
$ hg status
M a
$ hg ci -m "make a executable"
$ [ -x a ] || echo "executable bit not recorded"
$ hg up ".^"
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
make "a" renamed on the other side
$ hg mv a z
$ hg st --copies
A z
a
R a
$ hg ci -m "rename a to z"
created new head
merge them (from the rename side)
$ hg merge 'desc("make a executable")'
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg st --copies
M z
a
$ [ -x z ] || echo "executable bit lost"
merge them (from the chmod side)
$ hg up -C 'desc("make a executable")'
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ hg merge 'desc("rename a to z")'
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg st --copies
M z
a
R a
$ [ -x z ] || echo "executable bit lost"
$ cd ..
Removing the flag
-----------------
$ hg clone base-exec rename-merge-repo-removal
updating to branch default
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd rename-merge-repo-removal
make "a" non-executable on one side
$ chmod -x a
$ hg status
M a
$ hg ci -m "make a non-executable"
$ [ -x a ] && echo "executable bit not removed"
[1]
$ hg up ".^"
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
make "a" renamed on the other side
$ hg mv a z
$ hg st --copies
A z
a
R a
$ hg ci -m "rename a to z"
created new head
merge them (from the rename side)
$ hg merge 'desc("make a non-executable")'
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg st --copies
M z
a
$ [ -x z ] && echo "executable bit not removed"
[1]
merge them (from the chmod side)
$ hg up -C 'desc("make a non-executable")'
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ hg merge 'desc("rename a to z")'
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg st --copies
M z
a
R a
$ [ -x z ] && echo "executable bit not removed"
[1]
$ cd ..
Testing merging mode change with rename + modification on both side
===================================================================
Adding the flag
---------------
$ hg clone base-repo rename+mod-merge-repo
updating to branch default
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd rename+mod-merge-repo
make "a" executable on one side
$ chmod +x a
$ cat << EOF > a
> 1
> x
> 3
> 4
> 5
> 6
> 7
> 8
> 9
> EOF
$ hg status
M a
$ hg ci -m "make a executable, and change start"
$ [ -x a ] || echo "executable bit not recorded"
$ hg up ".^"
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
make "a" renamed on the other side
$ hg mv a z
$ hg st --copies
A z
a
R a
$ cat << EOF > z
> 1
> 2
> 3
> 4
> 5
> 6
> 7
> x
> 9
> EOF
$ hg ci -m "rename a to z, and change end"
created new head
merge them (from the rename side)
$ hg merge 'desc("make a executable")'
merging z and a to z
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg st --copies
M z
a
$ [ -x z ] || echo "executable bit lost"
merge them (from the chmod side)
$ hg up -C 'desc("make a executable")'
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ hg merge 'desc("rename a to z")'
merging a and z to z
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg st --copies
M z
a
R a
$ [ -x z ] || echo "executable bit lost"
$ cd ..
Removing the flag
-----------------
$ hg clone base-exec rename+mod-merge-repo-removal
updating to branch default
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cd rename+mod-merge-repo-removal
make "a" non-executable on one side
$ chmod -x a
$ cat << EOF > a
> 1
> x
> 3
> 4
> 5
> 6
> 7
> 8
> 9
> EOF
$ hg status
M a
$ hg ci -m "make a non-executable, and change start"
$ [ -x z ] && echo "executable bit not removed"
[1]
$ hg up ".^"
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
make "a" renamed on the other side
$ hg mv a z
$ hg st --copies
A z
a
R a
$ cat << EOF > z
> 1
> 2
> 3
> 4
> 5
> 6
> 7
> x
> 9
> EOF
$ hg ci -m "rename a to z, and change end"
created new head
merge them (from the rename side)
$ hg merge 'desc("make a non-executable")'
merging z and a to z
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg st --copies
M z
a
$ [ -x z ] && echo "executable bit not removed"
[1]
merge them (from the chmod side)
$ hg up -C 'desc("make a non-executable")'
1 files updated, 0 files merged, 1 files removed, 0 files unresolved
$ hg merge 'desc("rename a to z")'
merging a and z to z
0 files updated, 1 files merged, 0 files removed, 0 files unresolved
(branch merge, don't forget to commit)
$ hg st --copies
M z
a
R a
$ [ -x z ] && echo "executable bit not removed"
[1]
$ cd ..