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mq: use dirstateguard instead of dirstate.invalidate (qrefresh)...

mq: use dirstateguard instead of dirstate.invalidate (qrefresh) Before this patch, "mq.queue.refresh()" uses "dirstate.invalidate()" as a kind of "restore .hg/dirstate to the original status" during a failure. But it just discards changes in memory, and doesn't actually restore ".hg/dirstate". Then, it can't work as expected, if "dirstate.write()" is executed while processing. This patch uses "dirstateguard" instead of "dirstate.invalidate()" to restore ".hg/dirstate" during a failure even if "dirstate.write()" is executed before a failure. This patch also removes "beginparentchage()" and "endparentchange()", because "dirstateguard" makes them useless. This is a part of preparations to fix the issue that the recent (in memory) dirstate isn't visible to external processes (e.g. "precommit" hook).

Pierre-Yves David - - Load All Authors

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      #require serve fifo

      Test hangup signal in the middle of transaction

        $ hg init

        $ mkfifo p

        $ hg serve --stdio < p 1>out 2>&1 &

        $ P=$!

      Do test while holding fifo open

        $ (

        > echo lock

        > echo addchangegroup

        > start=`date +%s`

        > # 10 second seems much enough to let the server catch up

        > deadline=`expr $start + 10`

        > while [ ! -s .hg/store/journal ]; do

        >     sleep 0;

        >     if [ `date +%s` -gt $deadline ]; then

        >         echo "transaction did not start after 10 seconds" >&2;

        >         exit 1;

        >     fi

        > done

        > kill -HUP $P

        > ) > p

        $ wait

        $ cat out

        0

        0

        adding changesets

        transaction abort!

        rollback completed

        killed!

        $ ls -1d .hg/* .hg/store/*

        .hg/00changelog.i

        .hg/journal.bookmarks

        .hg/journal.branch

        .hg/journal.desc

        .hg/journal.dirstate

        .hg/requires

        .hg/store

        .hg/store/00changelog.i

        .hg/store/00changelog.i.a

        .hg/store/journal.phaseroots

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				#require serve fifo

				Test hangup signal in the middle of transaction

				$ hg init
				$ mkfifo p
				$ hg serve --stdio < p 1>out 2>&1 &
				$ P=$!

				Do test while holding fifo open

				$ (
				> echo lock
				> echo addchangegroup
				> start=`date +%s`
				> # 10 second seems much enough to let the server catch up
				> deadline=`expr $start + 10`
				> while [ ! -s .hg/store/journal ]; do
				> sleep 0;
				> if [ `date +%s` -gt $deadline ]; then
				> echo "transaction did not start after 10 seconds" >&2;
				> exit 1;
				> fi
				> done
				> kill -HUP $P
				> ) > p

				$ wait
				$ cat out
				0
				0
				adding changesets
				transaction abort!
				rollback completed
				killed!

				$ ls -1d .hg/* .hg/store/*
				.hg/00changelog.i
				.hg/journal.bookmarks
				.hg/journal.branch
				.hg/journal.desc
				.hg/journal.dirstate
				.hg/requires
				.hg/store
				.hg/store/00changelog.i
				.hg/store/00changelog.i.a
				.hg/store/journal.phaseroots