view tests/test-dispatch.py.out @ 40710:50a64c321c1e

branchmap: build the revbranchcache._namesreverse() only when required

On big repositories with a lot of named branches and that also increasing over
time, building of this dict can be expensive and shows up in profile.

For our internal repository, this saves ~0.05 seconds.

Thanks to Yuya for suggesting using util.propertycache() and
util.clearcachedproperty().

Differential Revision: https://phab.mercurial-scm.org/D5291

running: init test1
result: 0
running: add foo
result: 0
running: commit -m commit1 -d 2000-01-01 foo
result: 0
running: commit -m commit2 -d 2000-01-02 foo
result: 0
running: log -r 0
changeset:   0:0e4634943879
user:        test
date:        Sat Jan 01 00:00:00 2000 +0000
summary:     commit1

result: 0
running: log -r tip
changeset:   1:45589e459b2e
tag:         tip
user:        test
date:        Sun Jan 02 00:00:00 2000 +0000
summary:     commit2

result: 0