obsolete: use parsers.fm1readmarker if it exists for a ~38% perf win
This moves perfloadmarkers on my linux workstation (63494 markers from
mpm, crew, and myself) performance from
! wall 0.357657 comb 0.360000 user 0.350000 sys 0.010000 (best of 28)
to
! wall 0.222345 comb 0.220000 user 0.210000 sys 0.010000 (best of 41)
which is a pretty good improvement.
On my BSD machine, which is ancient and slow, before:
! wall 3.584964 comb 3.578125 user 3.539062 sys 0.039062 (best of 3)
after:
! wall 2.267974 comb 2.265625 user 2.195312 sys 0.070312 (best of 5)
I feel like we could do better by moving the whole generator function
into C, but I didn't want to tackle that right away.
#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