view tests/test-update-branches.out @ 11609:890ad9d6a169

log: slowpath: do not read the full changelog

When in the slowpath, we are examining _all_ changesets in revs.
We need to order reads so they happen increasingly for I/O performance.

Increasing windows were used to read changelog backwards in a windowed manner,
reading the changelog forward inside each window. But since no revision range
was specified, it was equivalent to reading the full changelog, even if a
single revision was passed to the commandline.

When --removed is used, we _need_ to scan all changesets, but if we're only
looking for file patterns, this is not necessary and we can stick to
the revspec that was given to us.

% initial repo state

@  5:e1bb631146ca  b1
|
o  4:a4fdb3b883c4 0:b608b9236435  b1
|
| o  3:4b57d2520816 1:44592833ba9f
| |
| | o  2:063f31070f65
| |/
| o  1:44592833ba9f
|/
o  0:b608b9236435

% norevtest none clean linear 4
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
parent=5
% norevtest none clean same 2
abort: crosses branches (use 'hg merge' or use 'hg update -c')
parent=2
% revtest none clean linear 1 2
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
parent=2
% revtest none clean same 2 3
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
parent=3
% revtest none clean cross 3 4
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
parent=4
% revtest none dirty linear 1 2
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
parent=2
M foo
% revtest none dirty same 2 3
abort: crosses branches (use 'hg merge' to merge or use 'hg update -C' to discard changes)
parent=2
M foo
% revtest none dirty cross 3 4
abort: crosses branches (use 'hg merge' to merge or use 'hg update -C' to discard changes)
parent=3
M foo
% revtest -C dirty linear 1 2
2 files updated, 0 files merged, 0 files removed, 0 files unresolved
parent=2
% revtest -c dirty linear 1 2
abort: uncommitted local changes
parent=1
M foo
% norevtest -c clean same 2
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
parent=3
% revtest -cC dirty linear 1 2
abort: cannot specify both -c/--check and -C/--clean
parent=1
M foo