Mercurial > hg
view tests/test-racy-mutations.t @ 51316:178e50edb4f8
changelog: stop useless enforcing split at the end of transaction
Changelogs are no longer created inline, and existing changelogs are
automatically split. Since we now enforce splitting at the start of any write,
we don't need to enforce splitting at the end of the transaction.
This has the nice side effect of killing the only user of "side_write".
author | Pierre-Yves David <pierre-yves.david@octobus.net> |
---|---|
date | Thu, 11 Jan 2024 16:35:52 +0100 |
parents | dcaa2df1f688 |
children |
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#testcases skip-detection fail-if-detected Test situations that "should" only be reproducible: - on networked filesystems, or - user using `hg debuglocks` to eliminate the lock file, or - something (that doesn't respect the lock file) writing to the .hg directory while we're running Initial setup ------------- $ hg init base-repo $ cd base-repo $ cat > "$TESTTMP_FORWARD_SLASH/waitlock_editor.sh" <<EOF > [ -n "\${WAITLOCK_ANNOUNCE:-}" ] && touch "\${WAITLOCK_ANNOUNCE}" > f="\${WAITLOCK_FILE}" > start=\`date +%s\` > timeout=5 > "$RUNTESTDIR_FORWARD_SLASH/testlib/wait-on-file" "\$timeout" "\$f" > if [ \$# -gt 1 ]; then > cat "\$@" > fi > EOF Things behave differently if we don't already have a 00changelog.i file when this all starts, so let's make one. $ echo r0 > r0 $ hg commit -qAm 'r0' $ cd .. $ cp -R base-repo main-client $ cp -R base-repo racing-client $ mkdir sync $ EDITOR_STARTED="$TESTTMP_FORWARD_SLASH/sync/.editor_started" $ MISCHIEF_MANAGED="$TESTTMP_FORWARD_SLASH/sync/.mischief_managed" $ JOBS_FINISHED="$TESTTMP_FORWARD_SLASH/sync/.jobs_finished" Actual test ----------- Start an hg commit that will take a while $ cd main-client #if fail-if-detected $ cat >> $HGRCPATH << EOF > [debug] > revlog.verifyposition.changelog = fail > EOF #endif $ echo foo > foo $ ( > unset HGEDITOR; > WAITLOCK_ANNOUNCE="${EDITOR_STARTED}" \ > WAITLOCK_FILE="${MISCHIEF_MANAGED}" \ > hg commit -qAm 'r1 (foo)' --edit foo \ > --config ui.editor="sh $TESTTMP_FORWARD_SLASH/waitlock_editor.sh" \ > > .foo_commit_out 2>&1 ;\ > touch "${JOBS_FINISHED}" > ) & Wait for the "editor" to actually start $ sh "$RUNTESTDIR_FORWARD_SLASH/testlib/wait-on-file" 5 "${EDITOR_STARTED}" Do a concurrent edition $ cd ../racing-client $ touch ../pre-race $ sleep 1 $ echo bar > bar $ hg --repository ../racing-client commit -qAm 'r2 (bar)' bar $ hg --repository ../racing-client debugrevlogindex -c rev linkrev nodeid p1 p2 0 0 222799e2f90b 000000000000 000000000000 1 1 6f124f6007a0 222799e2f90b 000000000000 We simulate an network FS race by overwriting raced repo content with the new content of the files changed in the racing repository $ for x in `find . -type f -newer ../pre-race`; do > cp $x ../main-client/$x > done $ cd ../main-client Awaken the editor from that first commit $ touch "${MISCHIEF_MANAGED}" And wait for it to finish $ WAITLOCK_FILE="${JOBS_FINISHED}" sh "$TESTTMP_FORWARD_SLASH/waitlock_editor.sh" #if skip-detection (Ensure there was no output) $ cat .foo_commit_out And observe a corrupted repository -- rev 2's linkrev is 1, which should never happen for the changelog (the linkrev should always refer to itself). $ hg debugrevlogindex -c rev linkrev nodeid p1 p2 0 0 222799e2f90b 000000000000 000000000000 1 1 6f124f6007a0 222799e2f90b 000000000000 2 1 ac80e6205bb2 222799e2f90b 000000000000 #endif #if fail-if-detected $ cat .foo_commit_out note: commit message saved in .hg/last-message.txt note: use 'hg commit --logfile .hg/last-message.txt --edit' to reuse it transaction abort! rollback completed abort: 00changelog.i: file cursor at position 128, expected 64 And no corruption in the changelog. $ hg debugrevlogindex -c rev linkrev nodeid p1 p2 0 0 222799e2f90b 000000000000 000000000000 1 1 6f124f6007a0 222799e2f90b 000000000000 (missing-correct-output !) And, because of transactions, there's none in the manifestlog either. $ hg debugrevlogindex -m rev linkrev nodeid p1 p2 0 0 7b7020262a56 000000000000 000000000000 1 1 ad3fe36d86d9 7b7020262a56 000000000000 #endif