Mercurial > hg
view tests/test-revert-interactive.t @ 30521:86cd09bc13ba
worker: use os._exit for posix worker in all cases
Like commandserver, the worker should never run other resource cleanup logic.
Previously this is not true for workers if they have exceptions other than
KeyboardInterrupt.
This actually caused a real-world deadlock with remotefilelog:
1. remotefilelog/fileserverclient creates a sshpeer. pipei/o/e get created.
2. worker inherits that sshpeer's pipei/o/e.
3. worker runs sshpeer.cleanup (only happens without os._exit)
4. worker closes pipeo/i, which will normally make the sshpeer read EOF from
its stdin and exit. But the master process still have pipeo, so no EOF.
5. worker reads pipee (stderr of sshpeer), which never completes because
the ssh process does not exit, does not close its stderr.
6. master waits for all workers, which never completes because they never
complete sshpeer.cleanup.
This could also be addressed by closing these fds after fork, which is not
easy because Python 2.x does not have an official "afterfork" hook. Hacking
os.fork is also ugly. Besides, sshpeer is probably not the only troublemarker.
The patch changes _posixworker so all its code paths will use os._exit to
avoid running unwanted resource clean-ups.
author | Jun Wu <quark@fb.com> |
---|---|
date | Thu, 24 Nov 2016 01:15:34 +0000 |
parents | 318a24b52eeb |
children | 841092fd6b85 |
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Revert interactive tests 1 add and commit file f 2 add commit file folder1/g 3 add and commit file folder2/h 4 add and commit file folder1/i 5 commit change to file f 6 commit changes to files folder1/g folder2/h 7 commit changes to files folder1/g folder2/h 8 revert interactive to commit id 2 (line 3 above), check that folder1/i is removed and 9 make workdir match 7 10 run the same test than 8 from within folder1 and check same expectations $ cat <<EOF >> $HGRCPATH > [ui] > interactive = true > [extensions] > record = > purge = > EOF $ mkdir -p a/folder1 a/folder2 $ cd a $ hg init >>> open('f', 'wb').write("1\n2\n3\n4\n5\n") $ hg add f ; hg commit -m "adding f" $ cat f > folder1/g ; hg add folder1/g ; hg commit -m "adding folder1/g" $ cat f > folder2/h ; hg add folder2/h ; hg commit -m "adding folder2/h" $ cat f > folder1/i ; hg add folder1/i ; hg commit -m "adding folder1/i" >>> open('f', 'wb').write("a\n1\n2\n3\n4\n5\nb\n") $ hg commit -m "modifying f" >>> open('folder1/g', 'wb').write("c\n1\n2\n3\n4\n5\nd\n") $ hg commit -m "modifying folder1/g" >>> open('folder2/h', 'wb').write("e\n1\n2\n3\n4\n5\nf\n") $ hg commit -m "modifying folder2/h" $ hg tip changeset: 6:59dd6e4ab63a tag: tip user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: modifying folder2/h $ hg revert -i -r 2 --all -- << EOF > y > y > y > y > y > n > n > EOF reverting f reverting folder1/g (glob) removing folder1/i (glob) reverting folder2/h (glob) diff --git a/f b/f 2 hunks, 2 lines changed examine changes to 'f'? [Ynesfdaq?] y @@ -1,5 +1,6 @@ +a 1 2 3 4 5 revert change 1/6 to 'f'? [Ynesfdaq?] y @@ -1,5 +2,6 @@ 1 2 3 4 5 +b revert change 2/6 to 'f'? [Ynesfdaq?] y diff --git a/folder1/g b/folder1/g 2 hunks, 2 lines changed examine changes to 'folder1/g'? [Ynesfdaq?] y @@ -1,5 +1,6 @@ +c 1 2 3 4 5 revert change 3/6 to 'folder1/g'? [Ynesfdaq?] y @@ -1,5 +2,6 @@ 1 2 3 4 5 +d revert change 4/6 to 'folder1/g'? [Ynesfdaq?] n diff --git a/folder2/h b/folder2/h 2 hunks, 2 lines changed examine changes to 'folder2/h'? [Ynesfdaq?] n $ cat f 1 2 3 4 5 $ cat folder1/g 1 2 3 4 5 d $ cat folder2/h e 1 2 3 4 5 f Test that --interactive lift the need for --all $ echo q | hg revert -i -r 2 reverting folder1/g (glob) reverting folder2/h (glob) diff --git a/folder1/g b/folder1/g 1 hunks, 1 lines changed examine changes to 'folder1/g'? [Ynesfdaq?] q abort: user quit [255] $ ls folder1/ g Test that a noop revert doesn't do an unnecessary backup $ (echo y; echo n) | hg revert -i -r 2 folder1/g diff --git a/folder1/g b/folder1/g 1 hunks, 1 lines changed examine changes to 'folder1/g'? [Ynesfdaq?] y @@ -3,3 +3,4 @@ 3 4 5 +d revert this change to 'folder1/g'? [Ynesfdaq?] n $ ls folder1/ g Test --no-backup $ (echo y; echo y) | hg revert -i -C -r 2 folder1/g diff --git a/folder1/g b/folder1/g 1 hunks, 1 lines changed examine changes to 'folder1/g'? [Ynesfdaq?] y @@ -3,3 +3,4 @@ 3 4 5 +d revert this change to 'folder1/g'? [Ynesfdaq?] y $ ls folder1/ g >>> open('folder1/g', 'wb').write("1\n2\n3\n4\n5\nd\n") $ hg update -C 6 3 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg revert -i -r 2 --all -- << EOF > y > y > y > y > y > n > n > EOF reverting f reverting folder1/g (glob) removing folder1/i (glob) reverting folder2/h (glob) diff --git a/f b/f 2 hunks, 2 lines changed examine changes to 'f'? [Ynesfdaq?] y @@ -1,5 +1,6 @@ +a 1 2 3 4 5 revert change 1/6 to 'f'? [Ynesfdaq?] y @@ -1,5 +2,6 @@ 1 2 3 4 5 +b revert change 2/6 to 'f'? [Ynesfdaq?] y diff --git a/folder1/g b/folder1/g 2 hunks, 2 lines changed examine changes to 'folder1/g'? [Ynesfdaq?] y @@ -1,5 +1,6 @@ +c 1 2 3 4 5 revert change 3/6 to 'folder1/g'? [Ynesfdaq?] y @@ -1,5 +2,6 @@ 1 2 3 4 5 +d revert change 4/6 to 'folder1/g'? [Ynesfdaq?] n diff --git a/folder2/h b/folder2/h 2 hunks, 2 lines changed examine changes to 'folder2/h'? [Ynesfdaq?] n $ cat f 1 2 3 4 5 $ cat folder1/g 1 2 3 4 5 d $ cat folder2/h e 1 2 3 4 5 f $ hg st M f M folder1/g R folder1/i $ hg revert --interactive f << EOF > y > y > n > n > EOF diff --git a/f b/f 2 hunks, 2 lines changed examine changes to 'f'? [Ynesfdaq?] y @@ -1,6 +1,5 @@ -a 1 2 3 4 5 discard change 1/2 to 'f'? [Ynesfdaq?] y @@ -2,6 +1,5 @@ 1 2 3 4 5 -b discard change 2/2 to 'f'? [Ynesfdaq?] n $ hg st M f M folder1/g R folder1/i ? f.orig $ cat f a 1 2 3 4 5 $ cat f.orig 1 2 3 4 5 $ rm f.orig $ hg update -C . 3 files updated, 0 files merged, 0 files removed, 0 files unresolved Check editing files newly added by a revert 1) Create a dummy editor changing 1 to 42 $ cat > $TESTTMP/editor.sh << '__EOF__' > cat "$1" | sed "s/1/42/g" > tt > mv tt "$1" > __EOF__ 2) Add k $ printf "1\n" > k $ hg add k $ hg commit -m "add k" 3) Use interactive revert with editing (replacing +1 with +42): $ printf "0\n2\n" > k $ HGEDITOR="\"sh\" \"${TESTTMP}/editor.sh\"" hg revert -i <<EOF > y > e > EOF reverting k diff --git a/k b/k 1 hunks, 2 lines changed examine changes to 'k'? [Ynesfdaq?] y @@ -1,1 +1,2 @@ -1 +0 +2 discard this change to 'k'? [Ynesfdaq?] e $ cat k 42 Check the experimental config to invert the selection: $ cat <<EOF >> $HGRCPATH > [experimental] > revertalternateinteractivemode=False > EOF $ hg up -C . 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ printf 'firstline\nc\n1\n2\n3\n 3\n5\nd\nlastline\n' > folder1/g $ hg diff --nodates diff -r a3d963a027aa folder1/g --- a/folder1/g +++ b/folder1/g @@ -1,7 +1,9 @@ +firstline c 1 2 3 -4 + 3 5 d +lastline $ hg revert -i <<EOF > y > y > y > n > EOF reverting folder1/g (glob) diff --git a/folder1/g b/folder1/g 3 hunks, 3 lines changed examine changes to 'folder1/g'? [Ynesfdaq?] y @@ -1,5 +1,4 @@ -firstline c 1 2 3 discard change 1/3 to 'folder1/g'? [Ynesfdaq?] y @@ -2,7 +1,7 @@ c 1 2 3 - 3 +4 5 d discard change 2/3 to 'folder1/g'? [Ynesfdaq?] y @@ -7,3 +6,2 @@ 5 d -lastline discard change 3/3 to 'folder1/g'? [Ynesfdaq?] n $ hg diff --nodates diff -r a3d963a027aa folder1/g --- a/folder1/g +++ b/folder1/g @@ -5,3 +5,4 @@ 4 5 d +lastline $ hg update -C . 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg purge $ touch newfile $ hg add newfile $ hg status A newfile $ hg revert -i <<EOF > n > EOF forgetting newfile forget added file newfile (yn)? n $ hg status A newfile $ hg revert -i <<EOF > y > EOF forgetting newfile forget added file newfile (yn)? y $ hg status ? newfile