view tests/test-blackbox.t @ 23225:bdf7b1ea1dae stable

changegroup: don't store unused value on fnodes (issue4443)

The contents of fnodes are only accessed once per key. It is wasteful to
cache the value since nobody will use it.

Before this patch, the caching of unused data in fnodes was effectively
causing a memory leak during the file streaming part of bundle creation.

On mozilla-central (which has ~190,000 entries in fnodes), this patch
has a significant impact on RSS at the end of generate():

before:  516,124 KB
after:   364,356 KB
delta:  -151,768 KB

The origin of this code can be traced back to 627cd7842e5d and has been
with us since the 2.7 release.

setup
  $ cat > mock.py <<EOF
  > from mercurial import util
  > 
  > def makedate():
  >     return 0, 0
  > def getuser():
  >     return 'bob'
  > # mock the date and user apis so the output is always the same
  > def uisetup(ui):
  >     util.makedate = makedate
  >     util.getuser = getuser
  > EOF
  $ cat >> $HGRCPATH <<EOF
  > [extensions]
  > blackbox=
  > mock=`pwd`/mock.py
  > mq=
  > EOF
  $ hg init blackboxtest
  $ cd blackboxtest

command, exit codes, and duration

  $ echo a > a
  $ hg add a
  $ hg blackbox
  1970/01/01 00:00:00 bob> add a
  1970/01/01 00:00:00 bob> add a exited 0 after * seconds (glob)

incoming change tracking

create two heads to verify that we only see one change in the log later
  $ hg commit -ma
  $ hg up null
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  $ echo b > b
  $ hg commit -Amb
  adding b
  created new head

clone, commit, pull
  $ hg clone . ../blackboxtest2
  updating to branch default
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ echo c > c
  $ hg commit -Amc
  adding c
  $ cd ../blackboxtest2
  $ hg pull
  pulling from $TESTTMP/blackboxtest (glob)
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files
  (run 'hg update' to get a working copy)
  $ hg blackbox -l 5
  1970/01/01 00:00:00 bob> pull
  1970/01/01 00:00:00 bob> updated served branch cache in ?.???? seconds (glob)
  1970/01/01 00:00:00 bob> wrote served branch cache with 1 labels and 2 nodes
  1970/01/01 00:00:00 bob> 1 incoming changes - new heads: d02f48003e62
  1970/01/01 00:00:00 bob> pull exited 0 after * seconds (glob)

we must not cause a failure if we cannot write to the log

  $ hg rollback
  repository tip rolled back to revision 1 (undo pull)

#if unix-permissions no-root
  $ chmod 000 .hg/blackbox.log
  $ hg --debug incoming
  warning: cannot write to blackbox.log: Permission denied
  comparing with $TESTTMP/blackboxtest (glob)
  query 1; heads
  searching for changes
  all local heads known remotely
  changeset:   2:d02f48003e62c24e2659d97d30f2a83abe5d5d51
  tag:         tip
  phase:       draft
  parent:      1:6563da9dcf87b1949716e38ff3e3dfaa3198eb06
  parent:      -1:0000000000000000000000000000000000000000
  manifest:    2:ab9d46b053ebf45b7996f2922b9893ff4b63d892
  user:        test
  date:        Thu Jan 01 00:00:00 1970 +0000
  files+:      c
  extra:       branch=default
  description:
  c
  
  
#endif
  $ hg pull
  pulling from $TESTTMP/blackboxtest (glob)
  searching for changes
  adding changesets
  adding manifests
  adding file changes
  added 1 changesets with 1 changes to 1 files
  (run 'hg update' to get a working copy)

a failure reading from the log is fine
#if unix-permissions no-root
  $ hg blackbox -l 3
  abort: Permission denied: $TESTTMP/blackboxtest2/.hg/blackbox.log
  [255]

  $ chmod 600 .hg/blackbox.log
#endif

backup bundles get logged

  $ touch d
  $ hg commit -Amd
  adding d
  created new head
  $ hg strip tip
  0 files updated, 0 files merged, 1 files removed, 0 files unresolved
  saved backup bundle to $TESTTMP/blackboxtest2/.hg/strip-backup/*-backup.hg (glob)
  $ hg blackbox -l 5
  1970/01/01 00:00:00 bob> strip tip
  1970/01/01 00:00:00 bob> saved backup bundle to $TESTTMP/blackboxtest2/.hg/strip-backup/*-backup.hg (glob)
  1970/01/01 00:00:00 bob> updated base branch cache in ?.???? seconds (glob)
  1970/01/01 00:00:00 bob> wrote base branch cache with 1 labels and 2 nodes
  1970/01/01 00:00:00 bob> strip tip exited 0 after * seconds (glob)

tags cache gets logged
  $ hg up tip
  1 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg tag -m 'create test tag' test-tag
  $ hg tags
  tip                                3:5b5562c08298
  test-tag                           2:d02f48003e62
  $ hg blackbox -l 3
  1970/01/01 00:00:00 bob> resolved 1 tags cache entries from 1 manifests in ?.???? seconds (glob)
  1970/01/01 00:00:00 bob> writing tags cache file with 2 heads and 1 tags
  1970/01/01 00:00:00 bob> tags exited 0 after ?.?? seconds (glob)

extension and python hooks - use the eol extension for a pythonhook

  $ echo '[extensions]' >> .hg/hgrc
  $ echo 'eol=' >> .hg/hgrc
  $ echo '[hooks]' >> .hg/hgrc
  $ echo 'update = echo hooked' >> .hg/hgrc
  $ hg update
  hooked
  0 files updated, 0 files merged, 0 files removed, 0 files unresolved
  $ hg blackbox -l 4
  1970/01/01 00:00:00 bob> update
  1970/01/01 00:00:00 bob> pythonhook-preupdate: hgext.eol.preupdate finished in * seconds (glob)
  1970/01/01 00:00:00 bob> exthook-update: echo hooked finished in * seconds (glob)
  1970/01/01 00:00:00 bob> update exited 0 after * seconds (glob)

log rotation

  $ echo '[blackbox]' >> .hg/hgrc
  $ echo 'maxsize = 20 b' >> .hg/hgrc
  $ echo 'maxfiles = 3' >> .hg/hgrc
  $ hg status
  $ hg status
  $ hg status
  $ hg tip -q
  3:5b5562c08298
  $ ls .hg/blackbox.log*
  .hg/blackbox.log
  .hg/blackbox.log.1
  .hg/blackbox.log.2

cleanup
  $ cd ..