phases: avoid N² behavior in `advanceboundary`
We allowed duplicated entries in the deque, which each entry could potentially
insert all its ancestors. So advancing boundary for the full repository would
mean each revision would walk all its ancestors, resulting in O(N²) iteration.
For repository of any decent size, N² is quickly insane.
We introduce a simple set to avoid this and get back to reasonable performance.
#require no-windows
$ . "$TESTDIR/remotefilelog-library.sh"
$ hg init master
$ cd master
$ cat >> .hg/hgrc <<EOF
> [remotefilelog]
> server=True
> EOF
$ echo x > x
$ hg commit -qAm x
$ cd ..
$ hgcloneshallow ssh://user@dummy/master shallow -q
1 files fetched over 1 fetches - (1 misses, 0.00% hit ratio) over *s (glob)
$ cd shallow
$ cat >> $TESTTMP/get_file_linknode.py <<EOF
> from mercurial import node, registrar, scmutil
> cmdtable = {}
> command = registrar.command(cmdtable)
> @command(b'debug-file-linknode', [(b'r', b'rev', b'.', b'rev')], b'hg debug-file-linknode FILE')
> def debug_file_linknode(ui, repo, file, **opts):
> rflctx = scmutil.revsingle(repo.unfiltered(), opts['rev']).filectx(file)
> ui.status(b'%s\n' % node.hex(rflctx.ancestormap()[rflctx._filenode][2]))
> EOF
$ cat >> .hg/hgrc <<EOF
> [ui]
> interactive=1
> [extensions]
> strip=
> get_file_linknode=$TESTTMP/get_file_linknode.py
> [experimental]
> evolution=createmarkers,allowunstable
> EOF
$ echo a > a
$ hg commit -qAm msg1
$ hg commit --amend 're:^$' -m msg2
$ hg commit --amend 're:^$' -m msg3
$ hg --hidden log -G -T '{rev} {node|short}'
@ 3 df91f74b871e
|
| x 2 70494d7ec5ef
|/
| x 1 1e423846dde0
|/
o 0 b292c1e3311f
$ hg debug-file-linknode -r 70494d a
df91f74b871e064c89afa1fe9e2f66afa2c125df
$ hg --hidden strip -r 1 3
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
saved backup bundle to $TESTTMP/shallow/.hg/strip-backup/df91f74b871e-c94d67be-backup.hg
$ hg --hidden log -G -T '{rev} {node|short}'
o 1 70494d7ec5ef
|
@ 0 b292c1e3311f
Demonstrate that the linknode points to a commit that is actually in the repo
after the strip operation. Otherwise remotefilelog has to search every commit in
the repository looking for a valid linkrev every time it's queried, such as
during push.
$ hg debug-file-linknode -r 70494d a
70494d7ec5ef6cd3cd6939a9fd2812f9956bf553