Mercurial > hg
view tests/test-mq-qrefresh.t @ 25757:4d1382fd96ff
context: write dirstate out explicitly at the end of markcommitted
To detect change of a file without redundant comparison of file
content, dirstate recognizes a file as certainly clean, if:
(1) it is already known as "normal",
(2) dirstate entry for it has valid (= not "-1") timestamp, and
(3) mode, size and timestamp of it on the filesystem are as same as
ones expected in dirstate
This works as expected in many cases, but doesn't in the corner case
that changing a file keeps mode, size and timestamp of it on the
filesystem.
The timetable below shows steps in one of typical such situations:
---- ----------------------------------- ----------------
timestamp of "f"
----------------
dirstate file-
time action mem file system
---- ----------------------------------- ---- ----- -----
* *** ***
- 'hg transplant REV1 REV2 ...'
- transplanting REV1
....
N
- change "f", but keep size N
(via 'patch.patch()')
- 'dirstate.normal("f")' N ***
(via 'repo.commit()')
- transplanting REV2
- change "f", but keep size N
(via 'patch.patch()')
- aborted while patching
N+1
- release wlock
- 'dirstate.write()' N N N
- 'hg status' shows "r1" as "clean" N N N
---- ----------------------------------- ---- ----- -----
The most important point is that 'dirstate.write()' is executed at N+1
or later. This causes writing dirstate timestamp N of "f" out
successfully. If it is executed at N, 'parsers.pack_dirstate()'
replaces timestamp N with "-1" before actual writing dirstate out.
This issue can occur when 'hg transplant' satisfies conditions below:
- multiple revisions to be transplanted change the same file
- those revisions don't change mode and size of the file, and
- the 2nd or later revision of them fails after changing the file
The root cause of this issue is that files are changed without
flushing in-memory dirstate changes via 'repo.commit()' (even though
omitting 'dirstate.normallookup()' on files changed by 'patch.patch()'
for efficiency also causes this issue).
To detect changes of files correctly, this patch writes in-memory
dirstate changes out explicitly after marking files as clean in
'committablectx.markcommitted()', which is invoked via
'repo.commit()'.
After this change, timetable is changed as below:
---- ----------------------------------- ----------------
timestamp of "f"
----------------
dirstate file-
time action mem file system
---- ----------------------------------- ---- ----- -----
* *** ***
- 'hg transplant REV1 REV2 ...'
- transplanting REV1
....
N
- change "f", but keep size N
(via 'patch.patch()')
- 'dirstate.normal("f")' N ***
(via 'repo.commit()')
----------------------------------- ---- ----- -----
- 'dirsttate.write()' -1 -1
----------------------------------- ---- ----- -----
- transplanting REV2
- change "f", but keep size N
(via 'patch.patch()')
- aborted while patching
N+1
- release wlock
- 'dirstate.write()' -1 -1 N
- 'hg status' shows "r1" as "clean" -1 -1 N
---- ----------------------------------- ---- ----- -----
To reproduce this issue in tests certainly, this patch emulates some
timing critical actions as below:
- change "f" at N
'patch.patch()' with 'fakepatchtime.py' explicitly changes mtime
of patched files to "2000-01-01 00:00" (= N).
- 'dirstate.write()' via 'repo.commit()' at N
'fakedirstatewritetime.py' forces 'pack_dirstate()' to use
"2000-01-01 00:00" as "now", only if 'pack_dirstate()' is invoked
via 'committablectx.markcommitted()'.
- 'dirstate.write()' via releasing wlock at N+1 (or "not at N")
'pack_dirstate()' via releasing wlock uses actual timestamp at
runtime as "now", and it should be different from the "2000-01-01
00:00" of "f".
BTW, this patch doesn't test cases below, even though 'patch.patch()'
is used similarly in these cases:
1. failure of 'hg import' or 'hg qpush'
2. success of 'hg import', 'hg qpush' or 'hg transplant'
Case (1) above doesn't cause this kind of issue, because:
- if patching is aborted by conflicts, changed files are committed
changed files are marked as CLEAN, even though they are partially
patched.
- otherwise, dirstate are fully restored by 'dirstateguard'
For example in timetable above, timestamp of "f" in .hg/dirstate
is restored to -1 (or less than N), and subsequent 'hg status' can
detect changes correctly.
Case (2) always causes 'repo.status()' invocation via 'repo.commit()'
just after changing files inside same wlock scope.
---- ----------------------------------- ----------------
timestamp of "f"
----------------
dirstate file-
time action mem file system
---- ----------------------------------- ---- ----- -----
N *** ***
- make file "f" clean N
- execute 'hg foobar'
....
- 'dirstate.normal("f")' N ***
(e.g. via dirty check
or previous 'repo.commit()')
- change "f", but keep size N
- 'repo.status()' (*1)
(via 'repo.commit()')
---- ----------------------------------- ---- ----- -----
At a glance, 'repo.status()' at (*1) seems to cause similar issue (=
"changed files are treated as clean"), but actually doesn't.
'dirstate._lastnormaltime' should be N at (*1) above, because
'dirstate.normal()' via dirty check is finished at N.
Therefore, "f" changed at N (= 'dirstate._lastnormaltime') is forcibly
treated as "unsure" at (*1), and changes are detected as expected (see
'dirstate.status()' for detail).
If 'hg import' is executed with '--no-commit', 'repo.status()' isn't
invoked just after changing files inside same wlock scope.
But preceding 'dirstate.normal()' is invoked inside another wlock
scope via 'cmdutil.bailifchanged()', and in-memory changes should be
flushed at the end of that scope.
Therefore, timestamp N of clean "f" should be replaced by -1, if
'dirstate.write()' is invoked at N. It means that condition of this
issue isn't satisfied.
author | FUJIWARA Katsunori <foozy@lares.dti.ne.jp> |
---|---|
date | Wed, 08 Jul 2015 17:01:09 +0900 |
parents | e955549cd045 |
children | bbf544b5f2e9 |
line wrap: on
line source
$ cat <<EOF >> $HGRCPATH > [extensions] > mq = > [diff] > nodates = 1 > EOF $ hg init a $ cd a $ mkdir 1 2 $ echo 'base' > 1/base $ echo 'base' > 2/base $ hg ci -Ambase adding 1/base adding 2/base $ hg qnew -mmqbase mqbase $ echo 'patched' > 1/base $ echo 'patched' > 2/base $ hg qrefresh $ hg qdiff diff -r e7af5904b465 1/base --- a/1/base +++ b/1/base @@ -1,1 +1,1 @@ -base +patched diff -r e7af5904b465 2/base --- a/2/base +++ b/2/base @@ -1,1 +1,1 @@ -base +patched $ hg qdiff . diff -r e7af5904b465 1/base --- a/1/base +++ b/1/base @@ -1,1 +1,1 @@ -base +patched diff -r e7af5904b465 2/base --- a/2/base +++ b/2/base @@ -1,1 +1,1 @@ -base +patched $ cat .hg/patches/mqbase # HG changeset patch # Parent e7af5904b465cd1f4f3cf6b26fe14e8db6f63eaa mqbase diff -r e7af5904b465 1/base --- a/1/base +++ b/1/base @@ -1,1 +1,1 @@ -base +patched diff -r e7af5904b465 2/base --- a/2/base +++ b/2/base @@ -1,1 +1,1 @@ -base +patched $ echo 'patched again' > base $ hg qrefresh 1 $ hg qdiff diff -r e7af5904b465 1/base --- a/1/base +++ b/1/base @@ -1,1 +1,1 @@ -base +patched diff -r e7af5904b465 2/base --- a/2/base +++ b/2/base @@ -1,1 +1,1 @@ -base +patched $ hg qdiff . diff -r e7af5904b465 1/base --- a/1/base +++ b/1/base @@ -1,1 +1,1 @@ -base +patched diff -r e7af5904b465 2/base --- a/2/base +++ b/2/base @@ -1,1 +1,1 @@ -base +patched $ cat .hg/patches/mqbase # HG changeset patch # Parent e7af5904b465cd1f4f3cf6b26fe14e8db6f63eaa mqbase diff -r e7af5904b465 1/base --- a/1/base +++ b/1/base @@ -1,1 +1,1 @@ -base +patched qrefresh . in subdir: $ ( cd 1 ; hg qrefresh . ) $ hg qdiff diff -r e7af5904b465 1/base --- a/1/base +++ b/1/base @@ -1,1 +1,1 @@ -base +patched diff -r e7af5904b465 2/base --- a/2/base +++ b/2/base @@ -1,1 +1,1 @@ -base +patched $ hg qdiff . diff -r e7af5904b465 1/base --- a/1/base +++ b/1/base @@ -1,1 +1,1 @@ -base +patched diff -r e7af5904b465 2/base --- a/2/base +++ b/2/base @@ -1,1 +1,1 @@ -base +patched $ cat .hg/patches/mqbase # HG changeset patch # Parent e7af5904b465cd1f4f3cf6b26fe14e8db6f63eaa mqbase diff -r e7af5904b465 1/base --- a/1/base +++ b/1/base @@ -1,1 +1,1 @@ -base +patched qrefresh in hg-root again: $ hg qrefresh $ hg qdiff diff -r e7af5904b465 1/base --- a/1/base +++ b/1/base @@ -1,1 +1,1 @@ -base +patched diff -r e7af5904b465 2/base --- a/2/base +++ b/2/base @@ -1,1 +1,1 @@ -base +patched $ hg qdiff . diff -r e7af5904b465 1/base --- a/1/base +++ b/1/base @@ -1,1 +1,1 @@ -base +patched diff -r e7af5904b465 2/base --- a/2/base +++ b/2/base @@ -1,1 +1,1 @@ -base +patched $ cat .hg/patches/mqbase # HG changeset patch # Parent e7af5904b465cd1f4f3cf6b26fe14e8db6f63eaa mqbase diff -r e7af5904b465 1/base --- a/1/base +++ b/1/base @@ -1,1 +1,1 @@ -base +patched diff -r e7af5904b465 2/base --- a/2/base +++ b/2/base @@ -1,1 +1,1 @@ -base +patched qrefresh --short tests: $ echo 'orphan' > orphanchild $ hg add orphanchild $ hg qrefresh nonexistentfilename # clear patch nonexistentfilename: * (glob) $ hg diff -c qtip $ hg qrefresh --short 1/base $ hg qrefresh --short 2/base $ hg qdiff diff -r e7af5904b465 1/base --- a/1/base +++ b/1/base @@ -1,1 +1,1 @@ -base +patched diff -r e7af5904b465 2/base --- a/2/base +++ b/2/base @@ -1,1 +1,1 @@ -base +patched diff -r e7af5904b465 orphanchild --- /dev/null +++ b/orphanchild @@ -0,0 +1,1 @@ +orphan $ cat .hg/patches/mqbase # HG changeset patch # Parent e7af5904b465cd1f4f3cf6b26fe14e8db6f63eaa mqbase diff -r e7af5904b465 1/base --- a/1/base +++ b/1/base @@ -1,1 +1,1 @@ -base +patched diff -r e7af5904b465 2/base --- a/2/base +++ b/2/base @@ -1,1 +1,1 @@ -base +patched $ hg st A orphanchild ? base diff shows what is not in patch: $ hg diff diff -r ???????????? orphanchild (glob) --- /dev/null +++ b/orphanchild @@ -0,0 +1,1 @@ +orphan Before starting exclusive tests: $ cat .hg/patches/mqbase # HG changeset patch # Parent e7af5904b465cd1f4f3cf6b26fe14e8db6f63eaa mqbase diff -r e7af5904b465 1/base --- a/1/base +++ b/1/base @@ -1,1 +1,1 @@ -base +patched diff -r e7af5904b465 2/base --- a/2/base +++ b/2/base @@ -1,1 +1,1 @@ -base +patched Exclude 2/base: $ hg qref -s -X 2/base $ cat .hg/patches/mqbase # HG changeset patch # Parent e7af5904b465cd1f4f3cf6b26fe14e8db6f63eaa mqbase diff -r e7af5904b465 1/base --- a/1/base +++ b/1/base @@ -1,1 +1,1 @@ -base +patched status shows 2/base as dirty: $ hg status M 2/base A orphanchild ? base Remove 1/base and add 2/base again but not orphanchild: $ hg qref -s -X orphanchild -X 1/base 2/base orphanchild $ cat .hg/patches/mqbase # HG changeset patch # Parent e7af5904b465cd1f4f3cf6b26fe14e8db6f63eaa mqbase diff -r e7af5904b465 2/base --- a/2/base +++ b/2/base @@ -1,1 +1,1 @@ -base +patched Add 1/base with include filter - and thus remove 2/base from patch: $ hg qref -s -I 1/ o* */* $ cat .hg/patches/mqbase # HG changeset patch # Parent e7af5904b465cd1f4f3cf6b26fe14e8db6f63eaa mqbase diff -r e7af5904b465 1/base --- a/1/base +++ b/1/base @@ -1,1 +1,1 @@ -base +patched $ cd .. Test qrefresh --git losing copy metadata: $ hg init repo $ cd repo $ echo "[diff]" >> .hg/hgrc $ echo "git=True" >> .hg/hgrc $ echo a > a $ hg ci -Am adda adding a $ hg copy a ab $ echo b >> ab $ hg copy a ac $ echo c >> ac Capture changes: $ hg qnew -f p1 $ hg qdiff diff --git a/a b/ab copy from a copy to ab --- a/a +++ b/ab @@ -1,1 +1,2 @@ a +b diff --git a/a b/ac copy from a copy to ac --- a/a +++ b/ac @@ -1,1 +1,2 @@ a +c Refresh and check changes again: $ hg qrefresh $ hg qdiff diff --git a/a b/ab copy from a copy to ab --- a/a +++ b/ab @@ -1,1 +1,2 @@ a +b diff --git a/a b/ac copy from a copy to ac --- a/a +++ b/ac @@ -1,1 +1,2 @@ a +c $ cd .. Issue1441: qrefresh confused after hg rename: $ hg init repo-1441 $ cd repo-1441 $ echo a > a $ hg add a $ hg qnew -f p $ hg mv a b $ hg qrefresh $ hg qdiff diff -r 000000000000 b --- /dev/null +++ b/b @@ -0,0 +1,1 @@ +a $ cd .. Issue2025: qrefresh does not honor filtering options when tip != qtip: $ hg init repo-2025 $ cd repo-2025 $ echo a > a $ echo b > b $ hg ci -qAm addab $ echo a >> a $ echo b >> b $ hg qnew -f patch $ hg up -qC 0 $ echo c > c $ hg ci -qAm addc $ hg up -qC 1 refresh with tip != qtip: $ hg --config diff.nodates=1 qrefresh -I b $ hg st M a $ cat b b b $ cat .hg/patches/patch # HG changeset patch # Parent 1a60229be7ac3e4a7f647508e99b87bef1f03593 diff -r 1a60229be7ac b --- a/b +++ b/b @@ -1,1 +1,2 @@ b +b $ cd .. Issue1441 with git patches: $ hg init repo-1441-git $ cd repo-1441-git $ echo "[diff]" >> .hg/hgrc $ echo "git=True" >> .hg/hgrc $ echo a > a $ hg add a $ hg qnew -f p $ hg mv a b $ hg qrefresh $ hg qdiff --nodates diff --git a/b b/b new file mode 100644 --- /dev/null +++ b/b @@ -0,0 +1,1 @@ +a $ cd .. Refresh with bad usernames. Mercurial used to abort on bad usernames, but only after writing the bad name into the patch. $ hg init bad-usernames $ cd bad-usernames $ touch a $ hg add a $ hg qnew a $ hg qrefresh -u 'foo > bar' transaction abort! rollback completed refresh interrupted while patch was popped! (revert --all, qpush to recover) abort: username 'foo\nbar' contains a newline! [255] $ rm a $ cat .hg/patches/a # HG changeset patch # Parent 0000000000000000000000000000000000000000 diff --git a/a b/a new file mode 100644 $ hg qpush applying a now at: a $ hg qrefresh -u ' ' transaction abort! rollback completed refresh interrupted while patch was popped! (revert --all, qpush to recover) abort: empty username! [255] $ cat .hg/patches/a # HG changeset patch # Parent 0000000000000000000000000000000000000000 diff --git a/a b/a new file mode 100644 $ cd .. Refresh with phase data: $ cd repo $ echo 'babar' >> a $ hg qnew -m 'update a' p2.diff $ hg phase p2.diff 2: draft $ echo 'beber' >> a $ hg qref $ hg phase p2.diff 2: draft $ hg phase --force --secret p2.diff $ echo 'bibir' >> a $ hg qref $ hg phase p2.diff 2: secret $ cd ..