view tests/test-fileset-generated.t @ 24735:07200e3332a1

tags: extract .hgtags filenodes cache to a standalone file

Resolution of .hgtags filenodes values has historically been a
performance pain point for large repositories, where reading individual
manifests can take over 100ms. Multiplied by hundreds or even thousands
of heads and resolving .hgtags filenodes becomes a performance issue.

This patch establishes a standalone cache file holding the .hgtags
filenodes for each changeset. After this patch, the .hgtags filenode
for any particular changeset should only have to be computed once
during the lifetime of the repository.

The introduced hgtagsfnodes1 cache file is modeled after the rev branch
cache: the cache is effectively an array of entries consisting of a
changeset fragment and the filenode for a revision. The file grows in
proportion to the length of the repository (24 bytes per changeset) and
is truncated when the repository is stripped. The file is not written
unless tag info is requested and tags have changed since last time.

This patch partially addresses issue4550. Future patches will split the
"tags" cache file into per-filter files and will refactor the cache
format to not capture the .hgtags fnodes, as these are now stored in
the hgtagsfnodes1 cache. This patch is capable of standing alone. We
should not have to wait on the tags cache filter split and format
refactor for this patch to land.

  $ hg init

Set up history and working copy

  $ python $TESTDIR/generate-working-copy-states.py state 2 1
  $ hg addremove -q --similarity 0
  $ hg commit -m first

  $ python $TESTDIR/generate-working-copy-states.py state 2 2
  $ hg addremove -q --similarity 0
  $ hg commit -m second

  $ python $TESTDIR/generate-working-copy-states.py state 2 wc
  $ hg addremove -q --similarity 0
  $ hg forget *_*_*-untracked
  $ rm *_*_missing-*

Test status

  $ hg st -A 'set:modified()'
  M content1_content1_content3-tracked
  M content1_content2_content1-tracked
  M content1_content2_content3-tracked
  M missing_content2_content3-tracked

  $ hg st -A 'set:added()'
  A content1_missing_content1-tracked
  A content1_missing_content3-tracked
  A missing_missing_content3-tracked

  $ hg st -A 'set:removed()'
  R content1_content1_content1-untracked
  R content1_content1_content3-untracked
  R content1_content1_missing-untracked
  R content1_content2_content1-untracked
  R content1_content2_content2-untracked
  R content1_content2_content3-untracked
  R content1_content2_missing-untracked
  R missing_content2_content2-untracked
  R missing_content2_content3-untracked
  R missing_content2_missing-untracked

  $ hg st -A 'set:deleted()'
  ! content1_content1_missing-tracked
  ! content1_content2_missing-tracked
  ! content1_missing_missing-tracked
  ! missing_content2_missing-tracked
  ! missing_missing_missing-tracked

  $ hg st -A 'set:unknown()'
  ? content1_missing_content1-untracked
  ? content1_missing_content3-untracked
  ? missing_missing_content3-untracked

  $ hg st -A 'set:clean()'
  C content1_content1_content1-tracked
  C content1_content2_content2-tracked
  C missing_content2_content2-tracked

Test log

  $ hg log -T '{rev}\n' --stat 'set:modified()'
  1
   content1_content2_content1-tracked |  2 +-
   content1_content2_content3-tracked |  2 +-
   missing_content2_content3-tracked  |  1 +
   3 files changed, 3 insertions(+), 2 deletions(-)
  
  0
   content1_content1_content3-tracked |  1 +
   content1_content2_content1-tracked |  1 +
   content1_content2_content3-tracked |  1 +
   3 files changed, 3 insertions(+), 0 deletions(-)
  
  $ hg log -T '{rev}\n' --stat 'set:added()'
  1
   content1_missing_content1-tracked |  1 -
   content1_missing_content3-tracked |  1 -
   2 files changed, 0 insertions(+), 2 deletions(-)
  
  0
   content1_missing_content1-tracked |  1 +
   content1_missing_content3-tracked |  1 +
   2 files changed, 2 insertions(+), 0 deletions(-)
  
  $ hg log -T '{rev}\n' --stat 'set:removed()'
  1
   content1_content2_content1-untracked |  2 +-
   content1_content2_content2-untracked |  2 +-
   content1_content2_content3-untracked |  2 +-
   content1_content2_missing-untracked  |  2 +-
   missing_content2_content2-untracked  |  1 +
   missing_content2_content3-untracked  |  1 +
   missing_content2_missing-untracked   |  1 +
   7 files changed, 7 insertions(+), 4 deletions(-)
  
  0
   content1_content1_content1-untracked |  1 +
   content1_content1_content3-untracked |  1 +
   content1_content1_missing-untracked  |  1 +
   content1_content2_content1-untracked |  1 +
   content1_content2_content2-untracked |  1 +
   content1_content2_content3-untracked |  1 +
   content1_content2_missing-untracked  |  1 +
   7 files changed, 7 insertions(+), 0 deletions(-)
  
  $ hg log -T '{rev}\n' --stat 'set:deleted()'
  1
   content1_content2_missing-tracked |  2 +-
   content1_missing_missing-tracked  |  1 -
   missing_content2_missing-tracked  |  1 +
   3 files changed, 2 insertions(+), 2 deletions(-)
  
  0
   content1_content1_missing-tracked |  1 +
   content1_content2_missing-tracked |  1 +
   content1_missing_missing-tracked  |  1 +
   3 files changed, 3 insertions(+), 0 deletions(-)
  
  $ hg log -T '{rev}\n' --stat 'set:unknown()'
  1
   content1_missing_content1-untracked |  1 -
   content1_missing_content3-untracked |  1 -
   2 files changed, 0 insertions(+), 2 deletions(-)
  
  0
   content1_missing_content1-untracked |  1 +
   content1_missing_content3-untracked |  1 +
   2 files changed, 2 insertions(+), 0 deletions(-)
  
  $ hg log -T '{rev}\n' --stat 'set:clean()'
  1
   content1_content2_content2-tracked |  2 +-
   missing_content2_content2-tracked  |  1 +
   2 files changed, 2 insertions(+), 1 deletions(-)
  
  0
   content1_content1_content1-tracked |  1 +
   content1_content2_content2-tracked |  1 +
   2 files changed, 2 insertions(+), 0 deletions(-)
  
Test revert

  $ hg revert 'set:modified()'
  reverting content1_content1_content3-tracked
  reverting content1_content2_content1-tracked
  reverting content1_content2_content3-tracked
  reverting missing_content2_content3-tracked

  $ hg revert 'set:added()'
  forgetting content1_missing_content1-tracked
  forgetting content1_missing_content3-tracked
  forgetting missing_missing_content3-tracked

  $ hg revert 'set:removed()'
  undeleting content1_content1_content1-untracked
  undeleting content1_content1_content3-untracked
  undeleting content1_content1_missing-untracked
  undeleting content1_content2_content1-untracked
  undeleting content1_content2_content2-untracked
  undeleting content1_content2_content3-untracked
  undeleting content1_content2_missing-untracked
  undeleting missing_content2_content2-untracked
  undeleting missing_content2_content3-untracked
  undeleting missing_content2_missing-untracked

  $ hg revert 'set:deleted()'
  reverting content1_content1_missing-tracked
  reverting content1_content2_missing-tracked
  forgetting content1_missing_missing-tracked
  reverting missing_content2_missing-tracked
  forgetting missing_missing_missing-tracked

  $ hg revert 'set:unknown()'

  $ hg revert 'set:clean()'